BeeldresolutieLW 02

“Quality?”

Waarneming afstand van waarnemer tot onderwerp formaat van medium

2MP (1600 x 1200)

3MP (2048 x 1536)

4MP (2272 x 1704)

5MP (2560 x 1920)

6MP (3072 x 2048)

8MP (3264 x 2448)

11MP (4064 x 2704)

14MP (4536 x 3024)

Pixels

megapixels aantal pixels van digitale foto’s

1MP (1280 x 960)

internet beelden van verschillende grootte

video stills van verschillende videoformaten

Resolutie

dpi dots per inch output naar analoge beeldvorming zoals bij film, fotopapier, print- en drukwerk

ppi pixels per inch input door digitale beeldvorming zoals bij digitale fototoestellen, camera’s en scanners

Output

druk standaard offset drukwerk 300 dpi (ppi)

web standaard 72 dpi (ppi)

300 versus 72

formaat

aantalpixels

resolutie

Image size

no resampling het aantal pixels blijft gelijk, enkel formaat en resolutie veranderen omgekeerd evenredig

Resampling

minder pixels worden weggelaten (herrekend) in functie van de gewenste resolutie en/of het formaat

meer pixels worden bijgemaakt (berekend) in functie van de gewenste resolutie en/of het formaat

Nearest Neighbor A fast but less precise method that replicates the pixels in an image. This method is for use with illustrations containing edges that are not anti-aliased, to preserve hard edges and produce a smaller file. However, this method can produce jagged effects, which become apparent when you distort or scale an image or perform multiple manipulations on a selection.

Bilinear A method that adds pixels by averaging the color values of surrounding pixels. It produces medium-quality results.

Bicubic A slower but more precise method based on an examination of the values of surrounding pixels. Using more complex calculations, Bicubic produces smoother tonal gradations than Nearest Neighbor or Bilinear.

Bicubic Smoother A good method for enlarging images based on Bicubic interpolation but designed to produce smoother results.

Bicubic Sharper A good method for reducing the size of an image based on Bicubic interpolation with enhanced sharpening. This method maintains the detail in a resampled image. If Bicubic Sharper oversharpens some areas of an image, try using Bicubic.