Is there a way to modify the exposure on a specific part of an image using rawtherapee, Gimp's ufraw, or any other free/open source tool?
I have a Canon EOS 1100D and I'd like to edit my raw pictures using Gimp. I've installed Ufraw but it says that there are is no white balance presets for my camera model. How can I make it work and ...
I have a basic understanding of curves. That is, I know the mathematical concept behind them, and I have an idea what happens when I change them. But this knowledge came from sources which assumed ...