Adapting to camera and new software.
Here's a challenge. Make the red-eye vanish in
a white cat with a blue eye. You'll note that his green eye, while not sharp, is at least not red. The blue eye, on the other hand, the light goes right along the optic nerve to reflect wherever it is it hits.
I am using no photo editing program but I guess you can tell from the lack of cropping and brightening.