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Star Diffusion

Learn how to add a unique dreamy effect to your photos with this Star Diffusion Photoshop

tutorial. This Photoshop effect creates diffusion in the shape of a four point star and is an

ideal effect for portraits or any photos with a strong background blur.

Preview of Final Results

http://photoshoptutorials.ws/photoshop-tutorials/photo-effects/star-diffusion.html

http://photoshoptutorials.ws/photoshop-tutorials/photo-effects/star-diffusion.html



Star Diffusion Photoshop Tutorial

Step 1: Open a photo into Photoshop

Begin by opening a photo into Photoshop. To do this, choose File>

Open, browse for the file, and click OK.

Step 2: Create a duplicate of the layer

Press Ctrl+J or choose Layer> Duplicate Layer to create a duplicate of

the Background layer. You should now have a new layer. Double-click

on the text of this layer and you will be able to edit the layer name.

Name this layer Star Diffusion.



Step 3: Add a layer mask

Add a layer mask to the Star Diffusion layer by clicking on the Add Layer

Mask button in the Layers pallet or by choosing Layer> Layer Mask>Reveal All. You should now have a white thumbnail beside the layer

mask.



Step 4: Create a copy of the image as a layermask

After you change the layer name, the layer mask will be deselected.Before we continue, click on the layer mask thumbnail in the Layer pallet

to activate it. It should have a white border around the thumbnail

indicating that it has been selected. With the layer mask selected,

choose Image> Apply Image. In the Apply Image tool, simply click OK to

use the default settings. The layer mask should now have a copy of the

image.



Step 5: Change the blending mode to Screen

In the Layers pallet, change the blending mode of the Star Diffusion

layer to Screen.

Step 6: Duplicate the Star Diffusion layer and

group the two layers

Make sure that the Star Diffusion layer is selected then press Ctrl+G or

choose Layer> Group Layers. The layer group put the layer into a group

to keep the layers organized. Double-click on the group name and

rename this group to Star Diffusion. Now, select back the Star Diffusion

layer and press Ctrl+J or choose Layer> Duplicate Layer to duplicate the

layer.



Step 7: Apply a diagonal motion blur

Select any one of the two Star Diffusion layer and choose Filter> Blur>

Motion Blur. Set the Angle to -45º and adjust the distance according tothe length of the streaks that you want. If you're working on a high

resolution image and the distance setting does not let you create streaks

long enough, use the highest setting, click OK, and then press Ctrl+F to

repeat the filter until you get the length you desire.



Step 8: Apply the opposite diagonal motion blur tothe other Star Diffusion layer

Now select the other Star Diffusion layer that you did not apply the

motion blur effect to. Choose Filter> Blur> Motion Blur and use the same

distance settings as before but use the opposite angle setting by simply

removing the - from the angle (ex. 45º instead of -45º). If you're working

on a high resolution image and you had to repeat the filter in the

previous step to get long streaks, don't forget to repeat the filter again so

that this layer has the same streak length as the other Star Diffusion

layer.



Step 9: Sharpen the Star Diffusion Layers

We now have a star diffusion effect, but it seems quite blurry and it's not

every noticeable. To make it more visible, we'll use the Unsharp Mask

filter to sharpen the layers. First, select any one of the two Star Diffusion

layer and choose Filter> Sharpen> Unsharp Mask. In the Unsharp Mask

tool, adjust the amount and radius settings to make the effect more

visible.



When done, click OK, and apply the filter again on the other Star

Diffusion layer by selecting the layer and pressing Ctrl+F or choosing

Filter> Unsharp Mask.



Step 10: Mask the effect out of the foreground

This star diffusion Photoshop effect can interfere with the subject in the

photo by covering it. To correct this, we'll simply mask out the effect from

the important areas in the photo. Begin by selecting the group in theLayers pallet and then clicking on the Add Layer Mask button in the

Layers pallet or choosing Layer> Add Layer Mask> Reveal All. Once you

have a layer mask, select the eraser tool and erase the areas that you

would like to hide the diffusion effect from. Start with a soft and large

round brush with a 50% opacity. The opacity of the brush can be

changed from the option bar located near the top of the Photoshop

window and the brush settings can be accessed by right-clickinganywhere in the document window.

Step 11: Alter the color of the Star Diffusion effect(optional)

If you want to be more creative, you can alter the color of the star

diffusion effect. For example, in the image below, the color of the two

layers were changed to make the background bokeh look like it came



from a city instead of a park. To alter the color of the effect, select the

Star Diffusion layer and adjust the hue with the Hue/Saturation tool (Ctrl

+U or Image> Adjustments> Hue/Saturation). Then, select the other Star

Diffusion layer and use the Hue/Saturation tool again to change the

color. You may also checkmark the Colorize option in the Hue/Saturation

tool if you want to use a specific color for the entire layer.

Final Results

Original image



Star Diffusion Photoshop tutorial

Star Diffusion (Different Variation)



Documents

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