I was at Upper Antelope Canyon (near Page Arizona)last year about this time. I was looking for a photo to test out my Capture One and Photoshop on, so I picked this one out of my files. I had never done anything with it. The colors in the slot canyons are amazing this time of year.
This photo was made with my all time favorite DSLR, the Fuji S5. The S5 has a Nikon D200 body and Nikon mount, but has a sensor built for high dynamic range by Fuji. Fuji has quit building this line :-{. I sold mine, but really regret it.
I'm not sure what Pbase does to our images, but this one really shows that the compression ruins the colors. Just click through the sizes on this one and watch what it does to the colors.