Lately, my lighting has become sophisticated enough to create those Joel Grimes 3 light tonemapped portraits. One advantage of this look, he discovered, is that it visually lends itself to compositing, with the subject isolated and then placed over a suitable background.
In the past when I’ve tried to isolate a hi-res portrait in GIMP (against a grey or white backdrop), it’s taken an immense effort. Joel is using Photoshop, so his techniques don’t really transfer. I’ve done my Google search, and I didn’t find anything different than what I tried, years ago.
Any resource recommendations ?