Add & Subtract Mask Brush Not Working

[Miguel Hortiguela]

Hi:

I selected the sky using the new Masking feature. I noticed that it selected some areas beyond the sky that I wanted to remove from the selection.  So, I selected the Subtract option and the Brush Tool to clean up the selection, but it didn't produce the expected result ie. remove areas from the selection.

I'm on a PC desktop with Windows 10 & Lr v 11.0.1

Thanks for your time.

[Stefano25453139jsrx]

I confirm, I had the same problem. For some reason the "density" of the brush was reduced to zero. Increasing it starts to make the "subtract" action effective. Using low values (i.e. 20-30) makes the process more robust (i.e. you actually remove areas you paint a few times) and gives the possibility to "feather" the subtraction.

[degibox]

Yeah. When using the "select subject" and "select sky" masking tools, sometimes the "subtract from mask" feature works, and sometimes it doesn't. Won't even let me click on it. It's a real head scratcher.

[IgnacioSottano]

In my case it was that when i made the substract mask brush to remove an existing mask the default density and flow for that brush was insanely low. Increasing its values did the trick, hope it helps!