My screenshots come out MUCH darker than my actual gameplay. To the point that I can't see my characters face sometimes. This happens whether I am using the in game print screen, alt+print screen, or fraps. It is also that way whether I open the pictures in gimp, windows picture viewer, paint or quicktime.
Any idea why this is? This is the only game doing this. I have tried increasing the brightness both on my desktop AND in game until I can see almost nothing but white, but it doesn't change the screenshot brightness AT ALL. Also, I tried turning off postprocessing effects and that didn't do anything either.
Sounds to me like you might have some gamma / brightness overrides set in your graphics driver. Try opening up your Nvidia / ATI control panel preferences, and make sure you don't have anything weird set there.