New answers tagged reverse-engineering
This effect is nothing but gradient map with layer blend. Just add blue color to one corner picker(darker area) and blue- white(lighter area) to the other end. Try different blending modes such as overlay and soft light.
It looks like he created a blue layer and gave it opacity, after converting the picture layer to black and white. So, make a new layer over your image, and flood-fill with blue. Then, set opacity %. Make sure this blue layer is higher than your picture layer.
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