Alt clicking on a layer mask will target the layer mask and it will be displayed in the image window as a gray scale mask. You should be able to paint on it and use adjustments to modify the layer mask. Paste will create a new layer in the current document that will contain the contents of the clipboard.
What you can do is add a new empty Alpha channel and Paste in the clipboard the create the layer mask selection you want to to add to the layer mask. You can then use calculation to blend in the layer mask or you may simply want to delete the existing layer mask and add the alpha channels as the mew layer mask.
I tried that method as well, but it didn't paste either
Hi, I don't get it, I was able to ALT+click a mask and paste an image (in greyscale, therefore)
What you can do is add a new empty Alpha channel and Paste in the clipboard the create the layer mask selection you want to to add to the layer mask. You can then use calculation to blend in the layer mask or you may simply want to delete the existing layer mask and add the alpha channels as the new layer mask
Hello, which version of Photoshop? 21.1.3?
It worked for me.
me too actually
I was also able to paste content on layer mask after Alt + clicking on it inside latest Ps on Win machine. Perhaps problem is in step when you copy content because from what I can see yu have handles on screenshot and it seems you have entered Free Transform after pasting content. I was able to reproduce that after copying pure white content to clipboard and pasting it on layer mask. This is one of possible reasons why things does not work as expected.
Alright, but how do I format the image in such a way that I can copy it into the layer mask? I don't see any options for it so far
I can not see your source image for better advice. Have you tried to use Copy Merged instead of Copy if you have layered file as source?
@bojan It's simply a jpg file embedded into the page. Copy merged is faded (not an option).
I find that Paste replaces the Layer mask it does not blend the clipboard into the existing layer mask. You would would need to paste the image into a new alpha channel then use calculations the blend the two channels into the layer mask you seem to want to create.
@JJMack Like I said before: whether I paste it in the layer mask or in the alpha channel is not the issue. The issue is that in neither situation the image is actually being pasted.
Are you sure the image is in the clipboard. Target the top layer then do a Paste is the image added as new top image layer?
If you are copying content of layer which is embedded in your document do the following:
That did it, thanks. I'm familliar with ctrl+clicking the layer, but hadn't imagined needing it here.
Thanks for sticking by 🙂
That's weird... This method didn't work for me.
I'm wondering if there's any way to do this in my case?
This answer is over a year old now. Has anything changed since then?
Missed Alt-ckick on the mask
Not by the button at the bottom of the panel, but by the mask itself