How to invert color of Mask

[Jeffrey]

Hi,

 

I often want to invert color of mask so that I may hide the effects of adjustment and later expose part of it by erasing that part of mask. I do not know how to invert color of mask from white ( transparent} to dark (opaque).

 

Please help.

[MEB]

Hi Jeffrey,

Select the mask in the Layers panel clicking on its thumbnail, change to Channels tab and click on the button Invert Channel on the right in the Alpha channel.

[Jeffrey]

Very helpful. thanks.