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+--- Thread: Copying/pasting alpha channel (/Thread-Copying-pasting-alpha-channel)
Copying/pasting alpha channel - jeremy.rutman - 10-17-2017
Hi
I'd like to use a gradient as an alpha channel , so that for instance an image fades to transparent.
I made a white->black radial gradient and did 'color->color to alpha' but now am stumped as to how to make this into the alpha channel for another image - I dont seem to be able to paste it as an alpha channel from 'Channels' which seemed like the most logical thing to do , and if I add this as a layer to another image and then merge down I lose the gradient alpha.
Maybe I need to use a mask?
RE: copying/pasting lpha channel - Ofnuts - 10-17-2017
Yes, you would use layer masks. When you are editing masks, copy/paste operations apply to masks.
However, if you use masks, doing a black to white gradient on the mask makes the layer progressively opaque, and is likely the same thing as what you get with your white->black gradient followed by color-to-alpha.