ImagePROGRAF Color Management Systems Guide

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January 29, 2008

Color Management

System Guide

imagePROGRAF


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Table of contents

1 Purpose of this document ..............................................................................................................................4

2 Color Mangement System ...............................................................................................................................4

2.1 What is CMS? ..........................................................................................................................................................................4

2.2 What do you need for CMS? ............................................................................................................................................. 5

3 ICC profile .............................................................................................................................................................6

3.1 What is an ICC profile? ........................................................................................................................................................ 6

3.2 How ICC profiles work .........................................................................................................................................................7

3.3 Aspects of ICC profiles ........................................................................................................................................................ 8

3.4 Guide to settings .................................................................................................................................................................. 8

3.5 Pointers on creating ICC profiles ..................................................................................................................................... 93.6 Pointers on using ICC profiles ........................................................................................................................................12

4 Workflow for Photoshop output ...................... ............. ............ ............. ............. ............. ............. ............ 17

4.1 Setup ........................................................................................................................................................................................17

4.2 Using the printer driver to print from Photoshop ..................................................................................................18

4.3 Using the Print Plug-in to print from Photoshop ....................................................................................................24

4.4 Using Photoshop's color management function for printing ............................................................................28

5 Monitor matching ............. ............. ............. ............. ............. ............. ............ ............. ............. ............. .......... 31

5.1 What is monitor matching? ............................................................................................................................................31

5.2 Why do colors not match? ...............................................................................................................................................32

5.3 Monitor matching procedure ........................................................................................................................................35

5.4 Monitor matching explanation .....................................................................................................................................40


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1 Purpose of this document

The purpose of this document is to assist sales staff when meeting with clients to accurately present the color

management function of the imagePROGRAF printer driver.

To achieve these goals, we have put together the following materials.

Explanationofcolormanagement

WhatareICCprofiles?PointersonusingICCprofiles

Description of how to manage colors using Adobe Photoshop and our printer driver

ExplanationofthemonitorcolormatchingfunctionthatutilizesKyuanos,Canon'sproprietarycolor

management system

2 CMS

2.1 What is a Color Management System?

What is a color management system (CMS)?

There are many devices that handle color, such as digital cameras and scanners for inputting images,

monitors for displaying them, and printers for outputting them. The problem is that all the different devices

that do this handle colors in different ways.

For example, if you scan the same document with different scanners, each scanner will output different

RGB data.

In the same way, even if the RGB values are the same, different monitors will display different colors.

Thesamegoesforprinting.EveniftheRGBvaluessenttotheprinterarethesame,theprintoutvaries

depending on the manufacturer and the model of the printer.

Firstofall,theformatofthecolordatamaybedifferent.SomedevicesuseRGBothersuseCMYK.

This means that there is absolutely no control of the color. It is input and output to various machines

without any adjustment and no way to predict how the color is reproduced.

This situation is what lead us to CMS, a system to manage color data between devices.


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2.2 What do you need for CMS?

A color management system is mainly made up of the following three components.

Colorprofile

This is data that defines the characteristics of how color is reproduced by different devices.Sometimes it is simply called a "profile". It might also be called a "look up table (LUT)" or a

"color table".

Colormatchingmodule(CMM)

This is a program that refers to the color profile to compute how colors are converted.

Applicationanddrivertorunthecolormatchingmodule

The CMM only converts the colors. To correctly manage colors, the application and the driver need to

access the CMM and color profile to accurately convert the colors in images.

Application or print driver

CMM Color profile

...

Color

conversion

The most commonly used color profile on the market is the ICC profile.

Windows has ICM and Macintosh has ColorSyncformanagingcolorsusingICCprofiles.Each

operating system is equipped with its own CMM.

In some cases, such as Adobe Photoshop, an application may have its own independent color

managementsystembuiltin.Forexample,AdobeColorEngine(ACE)isAdobePhotoshop'sproprietary

color matching module.The imagePROGRAF printer driver has ColorGear, Canon's proprietary high-accuracy color matching

module that uses ICC profiles to convert colors accurately.

The most important aspect of actually managing colors is to have the "correct settings" in the Print Driver.

No matter how accurate the ICC profile is, it is not possible to reproduce colors the way you expect them

if the color management settings are wrong. Actually it is common for documents to be printed with some

unintentional settings.

The following chapter describes how to correctly set the imagePROGRAF printer driver to correctly use

the ICC profile.


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3 ICC profile

3.1 What is an ICC profile?

An ICC profile is a file that holds the data describing the characteristics of colors for equipment that inputand output images, such as scanners, monitors, and printers. It is a type of color profile. There is now an

international standard for ICC profiles.

The standard for ICC profiles was established by the International Color Consortium. Companies in

the Canon Group have contributed to the development of this standard since the consortium was first

established.

International Color Consortium homepage: www.color.org

There are ICC profiles for each different devices, they are used for converting the color spaces for

individual and between multiple devices. That is to say, ICC profiles compensate for the characteristics of

devices and the color spaces they share.

How ICC profiles work

(Image from http://cp.c-ij.com/japan/colormanagement/chapter01/chapter01_2.html)


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ICC profiles are not used just by monitors, printers, and other hardware. There are profiles for different

types of paper and the color spaces of image data. When these ICC profiles are used correctly in a color

management system, it is possible get an imaging device to reproduce the optimum range of colors that

exist in image data.

3.2 How ICC profiles work

ICC profiles manage the color information that passes between any two machines.

It is possible to manage color information exchanged by different types and brands of devices by

combining two or more ICC profiles.

The next section shows how ICC profiles are typically used.

First, we will describe an example of managing colors between two devices.

Interim data

Subject

Data output to

printer

Input data from

camera Camera ICC profile Printer ICC profile

Color management

[Managing color data between a digital camera and a printer] Print result

Color conversion

The main function of ICC profiles is to convert colors from one ICC profile to another. The diagram shows

two ICC profiles being used to convert the color data input from a digital camera to generate color data

for a printer. This makes it possible to print a photo with colors that are corrected to correspond to the

colors of the subject.

When data is input from a scanner, an ICC profile for the scanner is used.

Interim data

Original

Data output to

printerInput data from

scanner

Print result

Scanner ICC profile Printer ICC profile

Color management

[Managing color data between a scanner and a printer]

Color conversion

This means that two ICC profiles, one each for the input and output devices, can be combined to convert

and correct colors between two different devices.


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Of these two ICC profiles, the ICC profile from the input device is called:

Inputprofile

Sourceprofile

The ICC profiles from the output device are called:

Outputprofile

Destinationprofile

3.3 Aspects of ICC profiles

The advantages of ICC profiles are listed below.

Theiruseiswidespreadbecausetheyaretheindustrystandard.

Thereareawealthofgeneral-purposetoolsforcreatingICCprofiles.

ManyapplicationsandprinterdriverssupportICCprofiles.

On the other hand, the following are some of the disadvantages.

SomelowqualityICCprofilesarebeingused.

SomeofthecommerciallyavailableICCprofilecreationtoolscannotgeneratehigh-accuracy

ICC profiles.

Sometimes,withsomecombinationsofdevices,theycannotconvertcolorsappropriately.

It is necessary to carefully control the apparent light source in the print out and the actual light

source of the subject.

ICC profiles alone cannot solve all the problems.

To start getting print outs in colors that are properly reproduced, you need to use high quality ICC profiles,

set the applications and drivers correctly, and look at the print out in the appropriate lighting.

3.4 Guide to settings

The following section describes how to use ICC profiles focusing on various examples of print settings.

Refer to the sections noted below for information on operations that fit your needs.

Create an ICC profile See 3.5 "Pointers on creating ICC profiles"

See 3.6 "Pointers on using ICC profiles"Use ICC profiles to print from a

printer driver

See 4.3 "Use the print plug-in to

print from Photoshop"

See 4.4 "Using Photoshop's color

management function for printing"

See 4.2 "Use the printer driver to

print from Photoshop"

Use a print

plug-in to printPrint from Adobe Photoshop

Use Photoshop's

CMM to print

Use a printer driver

to print


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3.5 Pointers on creating ICC profilesYou can get the following results by using commercially available ICC profile creation tools to create your

own ICC profiles.

Thecolorsofcustommedia(mediacreatedbyathird-party)canbecontrolled.

ImporttheICCprofilethatyoucreatedtoPhotoshop,orwhateverapplicationyouareusing,

and you can check the coloring of the print out on your monitor.

YoucanfinetunethecolorsbyeditingICCprofilesifyouhaveaneditorfunction.

It is, of course, possible to create an original ICC profile for the imagePROGRAF printer driver with a

commerciallyavailableICCprofilecreationtool.SomepopularICCprofilecreationtoolsincludeEye-One

Match and ProfileMaker from X-Rite (formerly GretagMacBeth).

Many of the profile creation tools create profiles as shown in the procedure below.

1. Use the printer driver to print a color chart

2. Dry the color chart

3. Measure the color chart

4. Import the results of the color chart measurement with the tool and do the various settings

5. Create a profile with the tool and save it as an ICC profile

The time to dry the color chart in step 2 is:

From30minutestoseveral hours forpigment ink

From12to24hoursfordyeink

These figures are only guidelines.

If you try to measure the color chart before it dries, you may get ink on your measuring equipment.

Make sure that the ink is completely dry before measuring the colors.

Notes Dry color chart

Steps 3 to 5 may vary depending on the profile creation tool. Refer to the profile creation tool for the correct procedure.

Notes How to use profile creation tools

The next section introduces some very important points for step 1 "Use the printer driver to print a color

chart".


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[Pointers on printing a color chart]

Follow the instructions in the profile creation application to print a color chart. Then the Printing

Preferences dialog box for the imagePROGRAF printer driver opens.

Select "Advanced Settings" in the Printing Preferences dialog box. The Advanced Settings screen opens.

Important !

Choose the correct settings for the following.

MediaType

PrintPriority

PrintQuality

Next, click the [Color Settings] button to open

the color settings dialog box, and select the

"Matching" tab.

Important !

Select "Off" from the Matching Mode.

Click the [OK] button until you get back to the

print dialog box.

Click the [Print] button in the print dialog box. The imagePROGRAF prints the color chart.

The following two points are very important when printing the color chart as described above.

Correctlyselectthe"MediaType","PrintPriority",and"PrintQuality"forprintingthecolor

chart.

Select"Off"formatching.

The ICC profile is created to be effective for the combination of "Media Type", "Print Priority", and "Print

Quality"thataresetwhenthecolorchartisprinted.Besuretorememberthecombinationof"MediaType",

"PrintPriority",and"PrintQuality"characteristicsfortheICCprofile.

Printed colors appear different because of the "Media Type" as well as the print mode ("Print Priority"

and"PrintQuality").Ifmorethanoneprintmodeisused,adifferentICCprofileneedstobecreated

specifically for each of those modes.TIP:


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By selecting "Off" for matching, you can create an ICC profile using the printer's optimum range of color

reproduction. Be sure to select "Off" for matching when printing a color chart. Selecting "Off" when you

create an ICC profile means you can use it with "ICC Matching Mode", "ICM Matching Mode" (Windows),

and "ColorSync Matching Mode" (Mac).

RIP and other output software print using color processing that is different from the printer driver. An ICC

profile that is created using the printer driver cannot be used with RIP or other software.TIP:


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3.6 Pointers on using ICC profiles

Using an ICC profile to convert colors when printing is usually done in the following ways.

ColorsareconvertedbytheimagePROGRAFprinterdriver

Colorsareconvertedbyanapplicationthathasacolormanagementfunction,suchasAdobe Photoshop

It is possible to accurately convert colors when printing from a variety of applications by using the

imagePROGRAF printer driver. This color conversion process is done using Canon's ColorGear color

matching module.

On the other hand, there is a growing number of people who are used to the operability of Adobe

Photoshop and like to convert the colors using Photoshop before they print. When Photoshop is used to

doconvertcolors,itisdonewithAdobe'sACE(AdobeColorEngine)colormatchingmodule.

This section explains how to use an ICC profile with the imagePROGRAF printer driver.

Chapter 4 explains various ways to print using Adobe Photoshop.

Setup

The location of ICC profiles is determined in advance for each OS.

Make sure that the ICC profiles (input profile and printer profile) you are using are located in the following

folders.

For Windows

(OS folder) \system32\spool\drivers\color

Example1:C:\Windows\system32\spool\drivers\color

Example2:C:\WINNT\system32\spool\drivers\color

If the ICC profile you want to use is not in the folder, double click the ICC profile and it is automatically

copied to the folder noted above. You can also manually move (or copy) an ICC profile to the folders

noted above. ( These operations require Windows administrator's privileges.)

For Mac OS X

/System/Library/ColorSync/Profiles

/User/(User name)/Library/ColorSync/Profiles

If the ICC profile that you want to use is not in the folder, use the following procedure to install the ICCprofile.

Move (or copy) the ICC profile to the folder (Mac) noted above.


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Next, open the print settings dialog box for the

imagePROGRAF printer driver.

Open the Color Mode settings to the Matching

tab.

On the Matching tab, open the Printer Profile

Settings and select ICC Matching Mode.

Next,open"Editprofiles"inthePrinterProfile

Settings.

When the window opens, select "Add Profiles to

the list" to open the "Add Profiles" window.

In this window you can select the specified ICC

profile, and press "Add" to add the ICC profile. You

can now select it from the driver window.


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Pointers on setting the imagePROGRAF printer driver

Open the imagePROGRAF printer driver's print settings dialog box.

Select "Advanced Settings" in the print settings dialog box. The Advanced Settings screen opens.

Important !

Select the correct options for the following items

according to the ICC profile being used.

MediaType

PrintPriority

PrintQuality



"Matching" tab.

Important !

Configure the following settings on the matching

tab.


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Setting Value Remarks

Matching Mode ICC Matching Mode Be sure to select ICC Matching Mode.

Matching Method

(Refer to the

"Matching Method"

column.)

PerceptualRecommend for printing when smooth tones are

important.

Colorimetric

Recommended for precise color matching. Some

tones that are outside the range of colors that theprinter can reproduce may be lost.

Saturation

For printing colors that are comparatively brighter

than when using "Perceptual". Depending on the

ICC profile, there may be no difference from printing

with "Perceptual".

Colorimetric

(no neutral point

compensation)

For reproducing colors including the color of the

paper. Depending on the ICC profile settings and

paper, there may be no difference from printing with

"Colorimetric".

Input ProfileSelect an ICC profile that issuitable for the image data

being input.

For example, if the image being printed was shot in

Adobe RGB, then select Adobe RGB.If the ICC profile that you want does not appear in the

list, copy that ICC profile to the OS's ICC profile folder.

Printer Profile SettingsSelect an ICC profile for

the printer.

Select the ICC profile you want from the ones you

created using an ICC profile creation tool.

The explanations displayed in the list in the printer profile settings are the "Descriptions" recorded in the

ICC profile. If you stop the cursor on an item in the list, you can check the name of the ICC profile in a

tiny popup window.Tips

Click the [OK] button until you get back to the print dialog box.

Click the [Print] button in the print dialog box.

The imagePROGRAF prints the image using color management.

The following two points are very important when using an ICC profile to print as described above.

Correctlyselectthe"MediaType","PrintPriority",and"PrintQuality"suitablefortheICCprofile.

Select"ICCMatchingMode"formatching.


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About matching methods

You can chose from the following matching methods for driver matching mode and ICC matching

mode.

Driver matching mode ICC matching mode

Automatic

Perceptual

Perceptual (skin tone/darkpoint priority)

Colorimetric

Saturation

Colorimetric (no neutral pointcompensation)

Next,let'ssummarizehowtheyaredifferent.

The three basic settings are "Perceptual", "Colorimetric", and Saturation.

The diagram shows how each of the three settings converts the colors shown on a monitor when

they are printed.

: Monitor color

reproduction range

: Printer color

reproduction range

SaturationColorimetricPerceptual

Brightness Brightness Brightness

Perceptual: The colors are smoothly compressed so the monitor and print colors match. This

maintains the tones in the entire image.

It is set so that the printed image you see matches the image on the monitor.

Colorimetric: The range of colors that the printer can reproduce are printed without any changes.

If a color is outside the printer's range of colors, the most similar color is used.

The colors within the printer's range are accurate, but bright colors lose tone.

Saturation: Mapping is done at the maximum range of the printer's colors to produce bright colors.

The areas that the printer cannot reproduce are reduced and reproducible areas are expanded.

Auto:The matching method changes automatically to text, graphics, or photo according to the image being

printed.Text is printed using "Saturation", and graphics and photos are printed using "Perceptual". (iPF

Series)

Perceptual (skin tone/dark point priority): Colors are tuned by using "Perceptual" as a base and

reproducing delicate gradations in skin tones and dark points. Recommended for reproducing colors

in portraits taken in studios.

Colorimetric (no neutral point compensation):The difference in the color of the paper is

reproduced based on "Colorimetric". This setting is often used to proof newspapers.


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4 Workflow for Photoshop output

In this chapter we explain how to use Adobe Photoshop to print on the imagePROGRAF printer.

There are basically three ways to print on the imagePROGRAF printer from Adobe Photoshop.

UsetheimagePROGRAFprinterdrivertoprint UsetheimagePROGRAFPrintPlug-InforPhotoshop*1 to print

UsePhotoshoptoconvertthecolorsandthenprint(usingtheprinterdriver)

Eachprintingmethodisexplainedhere.

4.1 Setup

Let's check the color space of the image data we are going to print before we start printing.

In Adobe Photoshop, select [Edit]-[Assign Profile], and you can check

the color space (profile) of the image

data that is currently open.

If the image was taken with a

digital camera, then it is probably

sRGB or Adobe RGB.

To prevent the colors from beingchanged when an image file is

opened, select [Edit]-[Color

Settings] to open the color settings

dialog box, and select the check

box for "Profile Mismatches" and

"Missing Profile".

*1The following models support the Print Plug-In (as of xx 2008): iPF5000, iPF8000, iPF9000, iPF5100, iPF6100, iPF6200, iPF8100,

iPF9100, iPF6000S, iPF8000S, and iPF9000.


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4.2 Use the printer driver to print from Photoshop

To correctly do CMS when printing from Photoshop, the "Color Handling" setting in Photoshop's print dialog box

is important:

InWindows,select"NoColorManagement"

InMacOSXselect"Managecolorsaccordingtoprinter"

(The optimum settings for Windows and Mac OSs are different because of the difference in the way the CMS is

handled between the application and the printer driver.)

You can prevent unexpected color conversion from occurring when the image data is sent from Photoshop to

the printer driver by selecting the appropriate "Color Handling".

How to set "Color Handling"

For Photoshop up until the CS2 edition, select [File] - [Print preview] to open the print dialog box.

1 Click "Advanced options" (or "Show other options").

2 Select "Color Management".

3 Color Handling: Select "No Color Management" on Windows, and "Printer controlled color"

on Mac OS X.

1

3

2


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For Photoshop CS3, select [File] - [Print] to open the print dialog box.

1 Printer: Select the imagePROGRAF printer you are using.


3 Color processing: Select "No Color Management" on Windows, and "Printer controlledcolor" on Mac OS X.

3

2

1

Print dialog box in Adobe Photoshop CS3

Next, you need to set the printer driver correctly to manage the colors.

If you selected "No Color Management", click the [Print] button. The print dialog box opens.

Click the [Preferences] button to open the print

settings dialog box.


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Select "Advanced Settings" in the print settings

dialog box.

Choose the correct settings for the following.

MediaType

PrintPriority

PrintQuality


the Color Settings dialog box, and select the

"Matching" tab.

Important !

The settings on this matching tab are the key to

managing colors on the printer driver.


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When printing sRGB and Adobe RGB images

First try doing the following settings.

Setting Value

Matching Mode Driver matching mode

Matching Method Perceptual or Colorimetric

Color Space sRGB/Adobe RGB

Choose "Perceptual" for the matching method to print great images with a balance of tone reproduction

and colors that correspond to the monitor.

On the other hand, select "Colorimetric" to print images that more accurately match the measured color

values of sRGB and Adobe RGB. However, the tone of colors outside the printer's range of reproducibility

may be poor.

It is a good idea to use either "Perceptual" or "Colorimetric" depending on the image.

If you are using an ICC profile that you made yourself or received from a media vendor, use the following

settings to print.

Setting Value

Matching Mode ICC matching mode


Input Profile sRGB v3.0 (Canon)/Adobe RGB (1998)

Printer Profile Settings ICC profile for the printer being used


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When printing images other than sRGB and Adobe RGB images

If the image input is RGB, but not sRGB or Adobe RGB, use the following settings for printing.

Specify the same ICC profile for the image that you confirmed in Photoshop's "Assign Profile" dialog box.

Setting Value

Matching Mode ICC compensation mode


Input Profile ICC profile for the image

Printer Profile Settings "Automatic setting" or ICC profile for the printer

Choose "Perceptual" for the matching method to print great images with a balance of tone reproduction

and colors that correspond to the monitor.

On the other hand, select "Colorimetric" to print images that more accurately match the input image.

However, the tone of colors outside the printer's range of reproducibility may be poor.

It is a good idea to use either "Perceptual" or "Colorimetric" depending on the image.

If you are using an ICC profile that you made yourself or received from a media vendor, select the desired

ICC profile by selecting the printer profile settings. For any other cases, select "Automatic setting".


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When you have finished the above settings, click

the [OK] button until you get back to the print

dialog box.


The imagePROGRAF prints the image using colormanagement.

The following is a summary of the settings when using an ICC profile to print as described above.

SetPhotoshopto"NoColorManagement".

IftheimagetobeprintedinsRGBorAdobeRGB,andthereisnoICCprofile,printindriver

matching mode.

IftheimagetobeprintedinnotsRGBorAdobeRGB,printinICCmatchingmodeas

matching.

IfyouareusinganICCprofilefortheprinter,printinICCmatchingmode.


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4.3 Use the Print Plug-in to print from Photoshop

AspecializedPrintPlug-inforPhotoshopisavailablefortheimagePROGRAFprintertomakeprintingeasierand

more accurate.

Features of the Print Plug-in for Photoshop

Printing done with the Print Plug-in has the following advantages compared to using a printer driver.

16bitprocessing:Whenusingaprinterdrivertoprocessimagedata,eachcolorislimitedto8-bitprocessingdepending

on the OS you are using. With the plug-in it is possible to do 16-bit internal processing of 1 6-bit image data to produce

extremely smooth gradation.

Operationscanberepeatedefficiently:Withaprinterdriver,whenprintingisfinishedtheprinterdriversettingsscreen

also closes.

However, with the plug-in, the settings screen stays open while printing is repeated. This makes it possible to repeat

operations such as "Adjust color" -"Test print" - "Check results".

Realtimepreview:Unlikeaprinterdriver,withthePlug-inyoucanpreviewtheadjustmentstocolororlayoutinrealtime.

Checking the image of the print out is efficient because you do not need to print the document every time you change a setting.

Managingprintsettings:ThePlug-inautomaticallysavesprintsettingsas[Printhistory]whenadocumentisprinted.

By saving print settings from the history to [Favorites] you can reproduce the same print results every time.

You use the print settings in [Print history] and [Favorites] for other images also.

Sharpness:Youcanuseasharpnessfunction,whichthepr interdriverdoesnothave.

The Print Plug-in has many functions, but this

document only explains the function related to

managing colors. Refer to the driver's guide for an

introduction to the other functions.

Now, let's use the Print Plug-in to print an image.

You can open the plug-in by clicking on [File] -

[Export]-[iPFxxxxPrintPlug-In].


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The first screen of the Print Plug-in.

Pointers on previews !

Thepreviewisshownontheleftsideofthescreensoasyouworkyoucanchecktheimagethatis

actually printed.

Youcancheckthatthepreviewsettingsmatchthe"PrintAreaLayout"andtheprintpositionfitsthe

paper. You can use the mouse to adjust the position in which the image is printed.

Thepreviewcanbesetto"Image",todisplayonlytheimage,lettingyoufocusontheappearanceof

image.

You can also use the mouse to trim the print range to just one part of the image.

Youcancheckthepositionoftheimageifitisprintedonrollpaperbysettingthepreviewto"Rollpaper

preview".

By turning on "Perform Proof in Preview", you can simulate the actual printed colors of the image on screen.

In some cases the colors that are actually printed and the simulation are different, depending on the

conditions and the environment being used. Also, if you select an ICC profile in [Outp ut Profile] that does

not support the print or media being used, the colors of the print out may be different.

Basically"Perform Proof in Preview" is effective when an ICC profile is selected in [Output Profile]. It is

also effective for some types of paper (high quality media for photos) even if you select [Auto (Color)] in

[Output Profile].

Youcanenlargethepreviewscreenbyclickingthemaximizebuttonintheupperrightofthedialogbox

forWindowssystemsorthe[MaximizeDialogBox]buttonforMacintoshsystems.


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The settings for managing the colors of printouts are all located on the "Main" tab.

This section explains the settings on the "Main" tab.

The basic settings such as the media type and the printing modes are along the right side of the dialog

box.

They are arranged so that you can work smoothly by starting at the top and working down.

1

2

3

4

5

6

7

1 Select the imagePROGRAF you are using.

2 Next, select the media type. Click the [Advanced Settings] to set the drying time for the ink

and other advanced settings.

3 Select the resolution, either 300 or 600 ppi, for transmitting the data from Photoshop to the

Print Plug-in. (The abbreviation ppi stands for pixels per inch.) Select 600 ppi if you want a high

accuracy reproduction. You may need to decide one way or the other based on the media type.

4 Select the input bit to the Plug-in. Select 16-bit to get a reproduction with smooth gradation.

You may not be able to select 16-bit depending on the media type and the input resolution.

5 It is possible to select some of the following print modes.

Fast, Standard, High, High (High Precision)

The selection may change to (1) to (4) depending on the settings.

6 You can select the output profile and the matching method. This is a very important setting

for managing colors. Refer to the following to find the most suitable settings.


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Output Profile: Auto (Color)

The best color profile based on the settings for the print condition is selected automatically. The same color

profile as the imagePROGRAF printer driver's "Driver matching mode" is used. This mode produces the

highest quality print out for authentic Canon media or media that is the same as authentic media.

You can choose from the following matching methods

Perceptual

Perceptual(skintone/darkpointpriority)*2

Chroma RelativeColorimetric

Output Profile: Auto (Monochrome Photo)

Automatically selects the best color profile for printing black and white photos. The same color profile as

the imagePROGRAF printer driver's "Monochrome (photo)" color mode is used.

Output Profile: None

Printing is done without using a color profile to match colors. The maximum limits of the printer's color

reproduction range are used. This setting is used to print a color chart to make an ICC profile or to print

images when Photoshop has been used to adjust the colors.

Output Profile: Other ICC profile

Select an ICC profile for the printer. Select the ICC profile you want from the ones you created using an

ICC profile creation tool.

You can choose from the following matching methods

Perceptual

Chroma

RelativeColorimetric

*2 imagePROGRAF 12-color printers support "skin tone/dark point priority".


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4.4 Using Photoshop's color management function for printingIf you can use an ICC profile for the printer, you can also adjust the colors with Photoshop before printing.

The print out is practically the same as adjusting the colors with the printer driver, but if you want to use

Adobe Photoshop to adjust the colors configure the following settings.

How to change the settings for adjusting colors with Photoshop

For Photoshop up until the CS2 edition, select [File] - [Print preview] to open the print dialog box.

1 Click "Advanced options" (or "Show other options").


3 Color Handling: Select "Let Photoshop Determine Colors".

4 Printer Profile: Select a printer profile from the list.

Important

1

2

3

4

Print dialog box in Photoshop CS2


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For Photoshop CS3, select [File] - [Print] to open the print dialog box.

1 Printer: Select the imagePROGRAF printer you are using.


3 Color Handling: Select "Photoshop Manages Colors".

4 Printer Profile: Select a printer profile from the list.

1

2

3

4

Important

Print dialog box in Photoshop CS3

Click the [Print] button.The print dialog box opens.

Click the [Preferences] button to open the print

settings dialog box.


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Select "Preferences". The Preferences screen opens.

Select the appropriate printing conditions. Choose

the correct settings for the following.

MediaType

PrintPriority

PrintQuality



"Matching" tab.

Important

Important !

Select "Off" from the matching modes.

Click the [OK] button until you get back to the print

dialog box.


The imagePROGRAF printer prints an image, the colors of which were adjusted using Photoshop.

The following two points are very important when printing using Photoshop to adjust colors.

Select"LetPhotoshopDetermineColors"inthePhotoshopsettingsandthenselectthe

correct printer profile.

Select"Off"formatching.


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5 Monitor matching

ThischapterdescribesthefeaturesofthemonitormatchingfunctionusedinCanon'sproprietaryKyuanoscolor

matching module first used in the iPF6200. Refer to the "Monitor matching explanation" in section 5.4

5.1What is monitor matching?

You may notice that photos taken with your digital camera look different when seen on the monitor of your

computer. And then, when you print the photo, it looks different than it does on the monitor of your computer.

Why does this happen?

The image that you see with your own eyes and that on on the monitor or printout are different.

This is because there are differences in the monitor's and printer's range of color reproduction and expression.

Because of this, if you use the default settings of your monitor and printer the output will be different.

The process of editing photos and illustrations improves dramatically if the colors on the monitor and match the

color of the printouts.

If the colors do not

match efficiency drops

If the colors do match

efficiency rises

Getting the colors on the monitor to match the colors on the print out by considering the differences in therange of color reproduction and expression that cause the difference in the appearance of colors is called

"monitor matching".

However, besides just the difference in the equipment, the way people perceive colors changes

depending on the environment in which they see the monitor and the printout. It is necessary to reduce

these differences as much as possible to accurately match colors.

First, why is it hard to match colors? The next section explains the reasons.

5.2Why dont colors match?


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Difference in the way colors are expressed

First, the way monitors and printers express colors is different.

Monitors use "additive colors". They combine the primary colors of red, green, and blue to produce white

light (white).

On the other hand, printers use "subtractive colors", they combine base colors cyan, magenta, and

yellow ink to get black.Monitors and printers use these different ways to express colors. That is why it is difficult to see the same

colors when looking at a monitor and a printer.

Principle of additive colors Principle of subtractive colors

Differences in color reproduction range

Next, there is also a difference in the range of colors that can be reproduced.The color reproduction

range indicates the range in which a machine can reproduce color.

Let's look at the following diagram. The diagram shows the differences in the range of colors reproduced

by monitors and printers.

A monitor can reproduce a range of vivid greens, but the printer cannot reproduce colors in this range.

However, the printer can reproduce a range of vivid cyans, but the monitor cannot. As shown here,

monitors and printers have different ranges of color reproduction which cannot be matched digitally.

Monitor color reproduction range

Printer color reproduction range

Printer

Monitor

Monitor and printer ranges of color reproduction

Differences in color spaces

The colors that appear on your mo nitor are determined using RGB values. However, the colors are different

if the definition of the color (color space) is different, even when using the same RGB values. The diagram

below shows the standard Windows sRGB color space and the larger color reproduction range of the Adobe

RGB color space. For example, if you specify primar y green "(R, G, B) = 0, 255, 0)", because the Adobe RGB

color reproduction range is larger, even if the RGB values are the same, the RGB green is more vivid than thesRGB green.


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This is why when the color space is not correctly specified that colors different from the expected colors

appear even when using the same RGB values.

Color spaces of sRGB and Adobe RGB

Adobe RGB (0, 255, 0)

sRGB (0, 255, 0)

Variations in colors with printers and monitors

The colors that are produced by devices appear different, even if the devices are the same model,

due to individual differences in the devices.

When a liquid crystal screen produces colors, the colors that are reproduced are different due to the

inherent characteristics of the LCD panel (color reproduction range, brightness, and color performance).

Because of this, the colors of the same image appear different if it is displayed on different models of

monitors. This is what causes the colors of an image at company B to be different from that of Company A

where the colors were adjusted for printing.

Evenifthemonitorsaretheexactsamemodel,thecolorsappeardifferenceduetoindividualdifferences

and variations in wear. This means that even if company B has monitors that are the same model, the

colors are not likely to match.

The colors reproduced by printers change gradually over time if the printers are used for a long time.

Because of this, even if the colors were matched up, as the printer and monitor are used the colors start

to vary.

Monitor at company A Monitor at company B (A)

Range of color reproduction for each monitor

Monitor at company B (B)

Individual differences in the monitors cause different colors to be reproduced


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Differences in lighting

The way we see colors on printed materials changes depending on the environment in which we look at

them.

Light in the environment strikes the printed matter and is then reflected into our eyes. By changing the

lighting where we are looking at printed materials, we change the characteristics of the light that is

reflected into our eyes, which changes the way we sense colors. Therefore, if we look at a printed imagein different lighting we sense different colors. That is to say, to match the colors on a monitor and a

printed image, we need to pay attention to the lighting environment in which we look at the printed image.

Lighting A Lighting B

Colors look different because the lighting is different


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5.3 Monitor matching procedure

Regular monitor matching using an ICC profile

What can be done to solve this problem?

Normally monitor matching is done by using an ICC profile. An ICC profile is a file that describes the colorcharacteristics of devices, such as a scanners, monitors, office printers, and large printing presses. It is

possible to control the uniformity of colors by using these ICC profiles.

Common color space

Image data

Digital camera

Printer

Monitor

ICC profileICC profile

ICC profileICC profile

The printer driver provided with Canon's imagePROGRAF printer already has ICC profiles that support many

kinds of media. It is possible to use these ICC profiles to do monitor matching. However, color management

using an ICC profile matches based on the color conversion characteristics of the various devices in a stable

viewing environment (e.g. D50). Because of this, it is necessary to adjust the actual environment to this viewing

environment. Also, if there is a large difference in the color reproduction range of the devices, there may be

problems with discrepancies in the accuracy of the color conversion and how colors appear.

TotakecareoftheseissueswhenusingaregularICCprofiletodomonitormatching,thereisKyuanos,

the next generation color management system.

ThisguideexplainsthefeaturesandsettingproceduresforKyuanosmonitormatching.

FeaturesofmonitormatchingwithKyuanos

[WhatisKyuanos?]

KyuanosisthenextgenerationcolormanagementsystemdevelopedatCanon.Kyuanosautomateshigh

accuracy color matching and helps to keep the appearance of colors at various devices the same frominputtoprintout.SomeKyuanosfunctionsusetheWindowsColorSystem(WCS),apartoftheWindows

Vista color management system.

[FeaturesofmonitormatchingwithKyuanos]

MonitormatchingwithKyuanoshasthefollowingfeatures.

1 The matching process takes into account the characteristics of the human eye

2 Supports monitor matching in a variety of generally used lighting environments

KyuanosmonitormatchingisastandardpartoftheimagePROGRAFprinterdriver.Thissystemmakesit

possible to do highly accurate monitor matching in a variety of normal viewing environments.


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1. The matching process takes into account the characteristics of the human eye

Themonitormatchingsystemswithgeneral-purposeICCprofilesusetheCIELABcolorspace,whichis

notdevicedependent.BecauseCIELABisaneutralcolorspace,itispossibletogetthecolorsproduced

by devices that have different color characteristics, such as monitors and printers, to appear "almost" the

same to the human eye. However, discrepancies in the color seen by the human eye and the value of acolor that is accurately displayed has become an issue.

In2002,theCIE(InternationalCommissiononIllumination:aninternationalbodyformedtodecidehow

colorsappearandhowtomeasurethem)establishedCIECAM02tosolvethisproblem.

ThecolorsofCIECAM02areclosertowhatthehumaneyecansensethanthoseofCIELAB.

ThefollowingdiagramsshowthecolorspacesofCIECAM02andCIELABwithlines(colorequivalence

line) indicating where humans see the same colors.

IntheCIELABcolorspace,thecolorequivalencelineintheblueareaisparticularlyskewed.Thisskew

is what causes the discrepancies in hue (colors) when colors are converted. For example, the vivid blue

areathatweseeonamonitorappearspurplewhenitisprinted.Ontheotherhand,intheCIECAM02

color space the line is less skewed so it has a closer relation to the colors that humans see.

KyuanosusestheCIECAM02colorspacetoexpresscolors.

So even when matching colors with devices that have different ranges of color reproduction, such as

monitors and printers, the color conversion is easier making high level processing without the occurrence

of hue (color) discrepancies possible. Also, the shape of the range of color reproduction for the monitor

and the printer is taken into account during the matching process and an optimum color conversion

parameter is automatically generated. This is what makes it possible to accurately convert colors directly

from the color reproduction range of a monitor to that of a printer.

Skewed color equivalence lineStraight color equivalence line


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Images with colors equivalent

toCIECAMO2

Image with colors equivalent

to the human eye

Images with colors

equivalenttoCIEL*a*b*

2. Supports monitor matching in a variety of generally used lighting environments

When matching colors with the previous type of ICC profiles, it was necessary to view the sample in a

lighting environment with the standard D50 light source (see the "What is ambient light?" column).

However, it was not realistic because of the expense to replace all the lighting in a room with fluorescent

lights that can be used for evaluating colors. It was also difficult to accurately match a standard value for

the warmth and brightness of colors because of the fluctuation in color warmth and brightness caused by

wall colors and outside lights. This is one of the reasons that matching colors of monitors and printers in

different lighting environments is so difficult.

WithKyuanosmonitormatching,theprinterdriverhasastandardfunctionforambientlighting

compensation. This function takes into account the different ways that we see monitors and printed

materials due to the "color temperature", "type of light source", "luminance", and other variations in a

lighting environment to match colors according to the lighting. This makes it possible to do monitor

matching in environments that are outside the predefined light source.

Matching is done according to

how the monitor is viewed

High color rendering fluorescent lamp5000 K 600 lx

Color matching that is not effected by the difference in lighting

Three band fluorescent lamp 4000 K 1000 lx

Matching is done according to

how the monitor is viewed


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What is ambient light?

For monitor matching, ambient light is the lighting condition in the "viewing environment". The

way we see monitors and printed materials varies depending on this "viewing environment".

Ambient light changes mainly because of three factors, they are "color temperature", "type of

light source", and "luminance (brightness of the light)".

Color temperature

"Colortemperature"isexpressedasthedegreesKelvinofthecolorofthelightsource.When

the color temperature is low it is red, the color shifts to yellow, white, and then blue as it

gets higher. Changing the color temperature of the lighting changes the way we see printed

materials, even if those materials do not change. Generally speaking, a light source with a color

temperatureof5000Kiscalled"D50"andisconsideredastandardlightsource.

2000K

3000K

4000K

5000K

6000K

7000K

8000K

9000K

10000K

Candlelight Tungsten l ight

Halogen light

Standard white Overcast sky Clear sky

Types of light sources

If the light source varies, then the color we see varies according to the wavelength of the light, even

if the color temperature is the same. The quality of a light source that makes things the colors that we

see is called the "color rendering property". It is expressed as "Ra" in lighting catalogs indicating the

evaluated average color rendering properties. There are three main categories of light sources that

are commonly used, "High color rendering", "Three band", and "Normal".

Types of light

sourcesFeatures

Locations normally

used

High

rendering

Light source suitable for evaluating colors. These types

of light sources are somewhat expensive.

"Color rendering AAA" indicates light sources that are used

for color evaluation.

Art museums

Studios

Printing plants

Three band

Light source suitable when both economy and light

rendering are factors.

Commercially available home-use fluorescent lights are

a typical example.

Offices

Homes

Shops that sell

colored items

Normal

Light source suitable for locations where economy is

important but light rendering is not as important.

Factories

WarehousesLockers

Luminance

"Luminance" is the brightness of a light. The unit for indicating luminance is the lux [lx] . The

brightness of the light where a monitor is located changes the way we see it. For example, if the

monitor is located in dim light, the monitor looks very bright with vivid colors. Contrarily, if the monitor

is located in bright light, it looks whitish with a little bit lower chroma. Printed materials on the other

hand appear to have lower chroma when seen in dim light and are more vivid when seen in bright

light.


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Equipmentandsoftwareneededtodomonitormatching

Next, the example recommended for people

who want to do more accurate monitor

matching.

Example of simple configuration Example of full-scale configuration

Printer

First, let's look at the example

recommended for people who want to give

monitor matching a try.

Monitor Monitor you have on hand

Monitor with RGB

adjustment function

recommended

Monitor that supports hardware

calibration

EIZO ColorEdge series, etc.

Calibrator Monitor calibrator (filter type)

Must be capable of measuring

light (luminance, color

temperature) such as X-Rite's

i1-Display2

i1 Pro scale (built-in

spectrophotometer)

Provided with X-Rite's i1

DesignLT/i1 Photo/i1 Proof etc.

Calibration software Specialized software for

monitors

ColorNavigator (provided with

the ColorEdge series)

Software provided with

calibrator

Eye-One Match (provided with

i1 series (free-of-charge)

Ambient light

measurement software

Ambient light measurement tool

Applications provided with

imagePROGRAF

(free-of-charge)

Light source check tool

Applications provided with

imagePROGRAF

(free-of-charge)

Applications for displaying

and editing imagesApplications for managing colors

Adobe Photoshop Elements etc.

Applications for managing colors

Adobe Photoshop CS3 etc.

imagePROGRAF printer/monitor matching compatibility

Compatible printers: iPF5100/iPF6100/iPF6200

* As of June 2008

* Check the [Paper Reference Guide] for information about media

supported by Kyuanos monitor matching.

You can display the paper reference guide by clicking [Product manuals] on the

[Support sheet] of the [Printer driver]. The relevant files from the User Manuals

CD-ROM must be installed.

Note


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[Exampleofsimpleconfiguration]

This method, called a software calibration, uses commercially available calibration tools. The advantage

of this configuration is that it is comparatively cheap. This is because it can be done with a general-

purpose monitor and uses a calibration tool to adjust the RGB output from the computer.

MonitorFirst, let's use the monitor you have on hand. We recommend you use a

monitor with a monitor menu that al lows the RGB to be adjusted.

Monitor calibration

First, let's take a look at a filter type calibrator. The X-Rite i1-Display2 or other

calibrator that can measure ambient light (color temperature/luminance) is

suitable for this.

Monitor calibration

software

Use the software that comes with the calibrator. You can get the software from

the Website for the calibrator or its CD.

Fori1-display2,useEye-OneMatch.

Ambient light

measurement software

Use the light source check tool provided with the imagePROGRAF.

Assess the type of the l ight source used for looking at printed materials.

Applications for displaying

and editing images

WerecommendAdobePhotoshopElementsbecauseitiscomparatively

cheap and has advanced editing functions and color adjustment functionsthat support color management.

Printer

Use one of the printer models that support monitor matching below.

iPF5100/iPF6100/iPF6200

For the latest information, check the imagePROGRAF printer homepage.

[Exampleoffull-scaleconfiguration]

This example is for a configuration with a monitor that has a built-in hardware calibration function to do

very precise monitor matching. Besides high precision, another advantage of monitors that support

hardware calibration is that the calibration work is easy and fast. This is because the monitor is calibrated

automatically just by setting the adjustment scale.

MonitorUseamonitorwithhardwarecalibration,suchasanEIZOColorEdgeseries monitor.

Monitor calibration

We recommend X-Rite's i1-Pro series. With the models that have a built-in spectrophotometer, it is possible to accurately measure ambientlight by using the ambient light measurement tool provided with theimagePROGRAF with the more accurate color measurement function.

Monitor calibrationsoftware

Use calibration software that supports your specific monitor.IfyouareusingaEIZOColorEdgeseriesmonitor,useColorNavigator,which is provided with the monitor.

Ambient lightmeasurement software

If you have a monitor in the I1-Pro series, use the ambient light measurementtool provided with imagePROGRAF printers.

Applications fordisplaying and editingimages

We recommend Adobe Photoshop, which is excellent software for re-touching that supports color management.

PrinterUse one of the printer models that support monitor matching below.iPF5100/iPF6100/iPF6200For the latest information, check the imagePROGRAF printer homepage.


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5.4 MonitorMatchingExplanation.

1 1.Calibrate the printer.

Calibration improves color consistency by compensating for slight differences in how colorappears due to individual variation among printheads or conditions in various printing

environments.

(See Using Color Calibration to Adjust Colors.)

2 2.Calibrate the monitor.

Normally, you can use a colorimeter such as the i1-Display.

Setthewhitepointto6500Kor5000K,thegammato2.2,andthebrightnessto120cd,and

activate light source measurement.

The exact procedure varies depending on your monitor and measurement device.

3 3.Open the file to print and configure settings in the source application.Display the file in the sRGB or Adobe RGB color space.

Configure settings to prevent color conversion by the application.

In Photoshop CS3, for example, select Color Management in the Print dialog box, and then select

No Color Management in Color Handling.

4 4.Configure and adjust printer driver settings.

Select Monitor Matching in Matching Method. Specify the Monitor White Point set during

monitor calibration and the Color Temperature and Illuminance measured in the ambient light.

In Color Space, select the color space used when displaying the file in the source application.

If you own an i1-Pro, using Light Source Measure Tool enables more precision measurement of

the ambient light.

Note

Ifyouwillprintrepeatedlyusingthesettingsvaluesyousetthisonetime,werecommend

completing the settings by accessing the printer driver dialog box from the operating system

menu. (See Accessing the Printer Driver Dialog Box from the Operating System Menu .)

For instructions on configuring printer driver settings for monitor matching, refer to the

following topic, as appropriate for your computer and operating system.


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CANON and IMAGEPROGRAF are registered trademarks of Canon Inc. in the United

States and may also be registered trademarks or trademarks in other countries.IMAGEANYWARE is a trademark of Canon. All other referenced product names and marks

are trademarks of their respective owners and are hereby acknowledged.2009 Canon U.S.A., Inc. All rights reserved.

1-800-OK-CANON

www.usa.canon.com

Canon U.S.A., Inc.

One Canon Plaza

Lake Success, NY 11042

Documents

ImagePROGRAF Color Management Systems Guide