I took a series of pictures at ISO 100-6400 on a tripod at f11 with live view, mirror up, no IS, one shop AF,10s timer and standard noise reduction in the menu. The shutter speeds were 1/100 for ISO 100 and 1/6400 for ISO 6400.
I did not refocus for each shot, just changed ISO and shutter speed. NR and sharpening was turned off in ACR 6.7. NR was done by NeatImage 7 and preset \'remove 50% noise\' used.
What you see is ISO100 with no shapening an NR and ISO3200 with NR and no sharpening.
If the fur on top of Clarence\'s head does not look the same in both images, there was a slight breeze in the garden, that might explain the differences as well as the lower 1/100 shutter speed at ISO 100
Now I am quite aware from posts on this thread, that this comparison will cut no ice with the majority of posters, but I am sure that there are a few who might still be interested.
I am not saying that the 7D is a generally useless camera, but as you might have gathered I am not that impressed with it. What I have been trying to say that IF you are going to crop your images a lot and IF your want to record fine detail, then stay away from ISOs above 800.
Mike Engles
PS I did make a picture that was clockwise, but it would have needed scrolling as the important images were one above the other. This way they are alongside making viewing easier.
I took a series of pictures at ISO 100-6400 on a tripod at f11 with live view, mirror up, no IS, one shop AF,10s timer and standard noise reduction in the menu. The shutter speeds were 1/100 for ISO 100 and 1/6400 for ISO 6400.
I did not refocus for each shot, just changed ISO and shutter speed. NR and sharpening was turned off in ACR 6.7. NR was done by NeatImage 7 and preset \'remove 50% noise\' used.
What you see is ISO100 with no shapening an NR and ISO3200 with NR and no sharpening.
If the fur on top of Clarence\'s head does not look the same in both images, there was a slight breeze in the garden, that might explain the differences as well as the lower 1/100 shutter speed at ISO 100
Now I am quite aware from posts on this thread, that this comparison will cut no ice with the majority of posters, but I am sure that there are a few who might still be interested.
I am not saying that the 7D is a generally useless camera, but as you might have gathered I am not that impressed with it. What I have been trying to say that IF you are going to crop your images a lot and IF your want to record fine detail, then stay away from ISOs above 800.
Sep 04, 2012 at 08:57 AM
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