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.
Multiply with Layer Mask Photoshop Tutorial
Step 1Open a photo you would like to edit. Or, you may use the photo used in this tutorial (from iStockPhoto).
Step 2To darken the image, simply duplicate the layer (Layer> Duplicate Layer or Ctrl+J) and change the blending mode of the new layer to Multiply. You may notice that the image got darker and some areas may be overly dark. We'll show you how to fix this problem in the next page.
Applying the Layer Mask
Step 3With the top layer selected, add a layer mask (Layer> Layer Mask> Reveal Al)
Step 4Here's the secret to this technique. The image is copied to the layer mask so that the layer is only visible on light areas. To do this, click on the thumbnail of the layer mask to select and use the Apply Image tool (Image> Apply Image) with the default settings:
- Layer: Merged
- Channel: RGB
- Invert: Unchecked
- Blending: Multiply
- Opacity: 100%
Step 5Notice the difference with the layer mask.
Tweaking the Effect
Step 6Duplicate the layer until the desired darkness has been achieved. If you duplicate the layer too much, it may cause a posterized effect.
Step 7If your image starts to appear posterized, you may selectively remove those areas from the effect. To do this, simply click to select the layer mask of the top layer and use the Eraser tool (E) to erase the areas with the posterized effect. If it is still visible, repeat this step for the other layer masks.
Rollover the image below to see the before and after effect.