Turn any photo into a dot grid artwork with these Photoshop actions. You'll get great results with dots that change size. They get larger in brighter areas and smaller in darker areas. Free download available.
Adding the Diffusion EffectMany experienced Photoshop users may already know about this popular effect. For those who don't know, you can apply a quick version of this effect by duplicating the layer, changing the blending mode to Screen, and applying a Gaussian Blur to the new layer. This tutorial goes further by showing you how to filter out the effect from dark areas and how to restore edge sharpness.
Step 1Open a photo to edit.
Step 2Duplicate the layer (Layer> Duplicate or Ctrl+J) and change the blending mode of the new layer to Screen.
Step 3Add a layer mask to the top layer (Layer> Add Layer Mask> Reveal All).
Step 4Make sure the layer mask is activated. The thumbnail of the layer mask in the layers window should have a white border around it. If it doesn't, click on the thumbnail to activate the layer mask.
Step 5With the layer mask activated, open the Apply Image tool (Image> Apply Image). The default settings should be fine. Simply click OK to continue.
Step 6Your image should now have a similar glow effect:
Step 7Click on the thumbnail of the top layer to deactivate the layer mask. With the top layer selected, open the Gaussian Blur filter tool (Filter> Blur> Gaussian Blur). Make sure that the preview checkbox is checked and increase the radius slider until the desired effect is achieved.
Restore Edge Sharpness
In this portion of the tutorial, you'll learn how to restore the edge sharpness. This portion of the tutorial is optional but we recommend that you follow it on your first try so that you'll be able to see the difference.