A FOlLOW UP TO THE PREVIOUS ENTRY, re: TRYING TO KEEP IT SIMPLE.
Hintsight being 20/20, it occurred to me that, while I wrote about using the Photoshop CURVES for image file adjustments, there was precious little detailed info about how to use the tool. The reason for that was simple inasmuch as I was trying to keep it simple. That reason plus the fact that I had no desire to get into the how-to stuff which can get fairly complex and/or, lazy wise, way too time consuming to write.
So, making amends wise, here's a link to the Adobe CURVES how-to page.
FYI, the best way to learn how to use the CURVES tool is to use it. To be safe, make a duplicate image file and just start screwing around with the tool. It really isn't rocket science, athough it might seem to be at first glance. And remember, in addition to global adjustments (the entire image), you make selections of any area, large or small, of the image and make adjustments to just that selection area. In either case, you can see on screen what your screwing around does to an image and , if you don't like it, you can just undo it.