I tried really hard to generate mazing in the the kindly uploaded colour chart file. I found that I could spot it at 200% in mustard yellows if I set all contrast sliders to maximum and pumped DPP sharpening up maximum, at which level you might expect it to wreak havoc. Considering the magnification, the very modest sharpening artefacts (maze?) are a triumph and a credit to the 7D:
The morals of this story are:
(1) don\'t believe everything you read on the internet - use a camera to make a print.
(2) don\'t apply extreme sharpening in DPP before making enormous prints, but I thought everyone knew that.
1. I am not against high MP counts. I own a 5D2 and actually considering the 18MP of the 7D a big plus compared to say the 8MP of a 20D
2. One thing for sure is that it is absurd to call the 7D a triumph of resistance to artifacting! Come on, I can boost contrast and set sharpness to 10 in DPP with my 15MP (close to 18MP) 50D and see NO artifacts, silky smooth yellow and yet the 7D under those conditions is riddled with artifacts and no upsamling the 50D to 18MP or the 7D down to 15MP does not make them look even in this case.
Now maybe something other than DPP will do it better. ACR 5.6B looks potentially good (the DPR samples are soft compared to what I can get, but sharpening them even a ton doesn\'t appear to bring out maze, although maybe the jog compression got rid of it, but still hopeful). Maybe you don\'t have to decry as much as I do, but you surely can\'t call it a remarkable triumph at avoiding such artifacts when it avoids them less well, clearly, than any other Canon body.
3. his copy also has the most even column to column response which probably helps his a bit compared to most copies
Nov 12, 2009 at 04:34 PM
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