trandoductin, yep I've used that and similar techniques in the past (usually using a raw processed at different settings) The technique in that video is "different" so instead of "me" saying , take the top bit from this image and the bottom bit from that , the actual image makes the decision. I did come across a "trick" used in this technique (for a different purpose) http://www.cambridgeincolour.com/forums/thread3924.htm. Which feels like it might have some promise ...make a layer mask using the image then play with colour levels (on the mask) to get the setting I want.
(feels like the same/right sort of thing as the image creates the mask and the "picture" (being masked) is/can be just painted on dabs of colour)
rich2005 , I'll take a look at that plugin, thanks.
Dug out somewhere I did the earlier technique a while back.
Before: https://photos.app.goo.gl/TahMGd0flG8xkro02
After: https://photos.app.goo.gl/jTylU9sQibHoad8F2
(feels like the same/right sort of thing as the image creates the mask and the "picture" (being masked) is/can be just painted on dabs of colour)
rich2005 , I'll take a look at that plugin, thanks.
Dug out somewhere I did the earlier technique a while back.
Before: https://photos.app.goo.gl/TahMGd0flG8xkro02
After: https://photos.app.goo.gl/jTylU9sQibHoad8F2