I took several photos of the Painted Ladies at different exposures, so I can attempt at HDR but I have not had time to give it a try. Also, I am not sure if GIMP lets me do that. I quickly looked online for plugins (for Mac) but I did not find any. This morning, my new 27-inch iMac arrived, so my editing environment got hugely enhanced. I cannot wait till I set it up and start using!