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Chuck Westfall of Canon commenting on an inquiry about the 1D:
INQUIRY:
"I have owned / extensively used a number of Canon DSLRs, including the 1D, 1D2, Rebel, Rebel XT, Rebel XTi, and 20D. I continue to notice over the years that when looking at screen saver photos, shots taken with my ID are very often noticeably sharper than any of the other cameras. The degree of this phenomenon continues to surprise me. You have previously advised that the 1D's AA filter was less aggressive than newer models. My understanding is that increasing the sharpness setting, when shooting JPEGs would, to some degree, counter the newer, more aggressive AA filters. My question is whether increasing sharpness to maximum on newer models would theoretically achieve the equivalent level of AA filtering on the 1D, and whether such a degree of sharpening would be expected to have a significant negative impact on image quality in other respects, such as moire, noise, etc.?"
WESTFALL'S RESPONSE:
"It's difficult to make a valid comparison between the EOS-1D and other EOS Digital SLRs, if for no other reason than the fact that the original 1D at 4 megapixels had the lowest resolution of any EOS Digital except for the 3.1MP EOS D30 back in 2000. In order to make any comparison as fair as possible for all the cameras involved, we'd have to settle on a fixed output size, such as a 13 x 19 inch print, so that we're not throwing away the higher resolution of the newer cameras before we compare. Under those conditions, I'd say that any current EOS Digital model would outperform the original 1D in terms of overall image quality including sharpness and noise, assuming equal in-camera sharpness and ISO settings, etc. You wouldn't even have to change the newer camera's default sharpness settings to see the improvements, although raising the sharpness settings on a newer camera would increase its advantage over the original 1D. The higher the resolution of the newer camera, the greater its overall sharpness would be on a 13 x 19 inch print, all else being equal. The same logic would even extend to a screensaver image, as long as the image data is downsampled properly. Note that I am not saying the original EOS-1D was a slouch by any means. I am saying, though, that current EOS cameras are much better in terms of image quality including sharpness and noise levels."
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