Particularly when trying to punch up dull skies into something with more blue tones, I’ll paint a mask with a large brush, and change down to something smaller around edges. I’ll finish the mask, start shifting things around… big gap in the sky! The mask says I painted that but… nada. In desperation, and annoyance, I start another mask, and… not all of the hole is repaired, and the whole thing becomes a round of whack-a-mole as I try to beat down the nasty little irregularities that auto-mask thinks it sees. My monitor says the sky is pretty much, to my eye, a field of “'blah”.
Question: Is there a way to expand the range of acceptance. That is, some part of the scene may be darker or lighter by only a small amount. Is there a way to expand the range to include the lighter or darker area, which would otherwise not be included in the mask?