Correcting a good image.
I found that in Yosemite that one image was having two different lighting situations. Not a problem to fix in Photoshop. I actually liked the first (original on the left) image until I see them side by side now. I brought the image up in Photoshop and made a copy. (ctrl +C). On the top image I put it into Filter> Camera Raw Filter. I adjusted the settings to my liking, a bit lighter then saved and closed. So now I have two images on top of each other. I put the darker layer on top and erased the bottom of that layer. The lighter image appears and because it is a copy there is no problem with it not matching. The rock areas in Yosemite can reflect the light so much more than the trees and meadows on the ground so I will be using this technique in a lot of my images.