On Sunday, February 23, 2003, at 01:19 PM, John Lovda wrote:
The images from the 1Ds all seem to be slightly out of focus. There are a lot of pixels there but the images from my 1D in the equivalent "High Quality, Low Compression JPG" mode are sharper at life size, 100% on my computer screen. I am using an EF 16-35 L. The 1Ds body is in pristine physical condition.
Thanks, John Lovda Canton, OH
Hi John,
It sounds, from the above paragraph, that you are saying the images look sharp on the screen, and in focus, but not when printed out at some specific size?? If that is correct, I think the issue you are having is one of sharpening. Because the image is so large, in terms of pixel dimensions, it has to be "shrunk" a lot in printing, compared to a 1D image, so if you compared the two cameras images at 100% on the monitor, if they looked equally sharp, but then printed them out at the same size, the 1Ds image would have to be reduced by about 50% compared to the 1D image, and that would also reduce the sharpening by that same amount, resulting in a print that looks less sharp. If you printed them so that they were both at, say 240 pixels per inch on the print out, meaning that the 1Ds image were much larger than the 1D image, I think they would look equally sharp. Do you see what I mean? Is this what you are seeing, or did I misinterperet your question?
If this is the issue, then the fix is to apply a greater "radius" value in your unsharp masking routine (the camera would not do this, even if both cameras were set to "high sharpening" because Canon does not want to make the images from the camera "too sharpened" to print at large sizes, where you could see the sharpening halos--but that requires that if you were going to make a small print, like 8x10, that you would have to make the sharpening halos so large on the screen that they were obvious, before you would notice much of a sharpening effect in the print).
Sorry to be so long winded, but it seems a little difficult to explain, especially since I am not positive if this is the kind of problem you are having.
Mike
Michael J. Shupe M.J.Shupe Photography, Streetcar Station Michigan Tech University www.northernlightsgallery.com
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