I have been studying color correction as taught by Dan Margulis. He is world expert on the subject, and his teachings are extraordinary. He tells PS users to use all 10 channels in PS, not just RGB, and he teaches the power of blending modes, which are, for the most part, non destructive, and “even” in the application of changes. Here are three recent photos, all taken from images captured on a trip a few years back. Save those originals, for as PS gets refined, poor images recorded in the past can find a new life.