Turn Black into an Alpha Channel in Photoshop (Patreon)

Hello Supporters! 

Today I have a quick Photoshop tip for y'all:  sometimes we need to convert an opacity map into something that has an  alpha channel. Different apps deal with this concept differently: Iray  uses opacity maps, whereas Blender and Unreal Engine can use the  transparency in a PNG file. I'll show you how to turn the "black" in  such a map into an alpha channel in Photoshop.

Gimp has a great feature called Black to Alpha, we'll use Blending Options in Photoshop to get the same effect.