RMM wrote:
In Photoshop, you can add a layer filled with 50 percent gray and set it in Overlay mode. You can then use a brush with black or white to dodge or burn selected areas. You can use a low opacity with the brush. Since it's being done on a separate layer, it's easy to correct mistakes if you are a bit too aggressive.
Yeah, you talked me into it. I really need to buy and learn photoshop! Picassa is very limited.