Hi all, some time ago I read an article about a tip for correcting exposure of portraits in PS. All I recall was that it referred to creating an oval over the subjects face and then correcting the whole image exposure based on this crucial part, rather than correcting based on the whole image.
I cannot recall how to do what was being suggested and I cannot find the article. I'm not even sure whether it was a magazine article, a web article or a forum post!
Can anyone help with tracking down this/similar article(s) or explaining the technique for me...it's really bugging me now.