How to work on mask inside a mask?

Support and Advice General Questions
1

If I have a mask around an eye, for instance, and then want to work on the iris or pupil using a circular mask, is there a way (without adding a local selection) to do this?

This seems to work:

  1. Create the inner mask with “symmetric difference” action.
  2. invert the selection.
  3. Can now work on the inner selection, without having destroyed the outer.

but… I don’t know how to remove the inner mask from there, after finish working.

It’s probably straightforward, or there is a better way to work on a mask inside a mask… hope to find out :slight_smile:

Thanks,

2

This needs an annotated screenshot.
Why don’t you want to use Local Selection Masks? They’re very useful for changing masking quickly and easily.

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3

No particular reason. Just trying to do it without because it looked like it should be possible. Totally agree local selection masks work well :slight_smile:

4

Whatever selection you have active on the global mask, you can add to it or subtract from it by choosing the appropriate Action in the Tool Options docker. You can also use the Ctrl, Shift, Alt modifier keys but I can never remember what they do though the cursor does change to indicate which Action is active.

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5

Gotcha, sounds like what I need.

6

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