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.
Local Contrast Photoshop Tutorial
Step 1: Open an imageOpen a photo into Photoshop. To open a file, choose File > Open, browse for the image file, and click OK.
Step 2: Duplicate the layer and add a layer maskPress Ctrl+J or choose Layer > Duplicate. This will create a second copy of the background layer. On the new layer, click on the add layer mask button in the Layers palette to add a layer mask.
Step 3: Use the Unsharp Mask filterWhen we added the layer mask, it automatically selected the layer mask. Select back the layer by clicking on the thumbnail of the layer. Now choose Filter > Sharpen > Unsharp Mask. In the Unsharp Mask tool, set the Amount to 100% and increase the radius until the details become more apparent. Don't worry about it looking too sharpened - we'll work on that later. Adjust the amount so that the image contrast looks strong, but not posterized. Click OK when done.
Step 4: Paint the layer maskMost likely, you don't want this effect to appear on the entire image, but rather just certain areas. In this step, we'll paint the layer mask to specify where and how strong the local contrast effect will be applied. There are two ways to do it:
- Remove the effect from certain areas Use the Eraser tool to erase certain areas of the layer mask.
- Add the effect to certain areas Select the layer mask and press Ctrl+I to invert. This will make the layer mask black. Use the Brush tool to paint the areas that you want to apply the local contrast effect to.