My friend just started playing with photoshop. We had the same photograph. I loaded it into gimp and took a screenshot of the levels histogram. She compared the gimps histogram with adopees and they were very different. Unfortunately, she doesn't know how to get a screenshot from her powerfully expensive program so I am unable to make the same visual comparison. It seems to me like the histograms should be the same, regardless of the program. Is this a wrong expectation?