Originally Posted by rodi
it might be pretty normal. Nikon's are the ones that can underexpose by 4+ stops and still have a useable image.
Agreed. And 99.99% of the time I wouldn't be boosting exposure like that and taking 100% crops. On that image I did try to bring up the light in the darker areas a bit and that's when I noticed the lines. I really needed to be using a grad filter there anyway. I just don't have one that's dark enough.