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Flatbed Scanner Specs
Old 08-19-2004, 10:57 PM   #1 (permalink)
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Can someone please tell me what 4800 x 9600 dpi means in terms of scanning an 8x10 photo print on a flatbed scanner. I have used a 4000 dpi film scanner to scan slides and negatives and have been able to produce acceptable 13 x 19 prints. Will I be able to produce larger sized quality images by scanning an existing 8 x 10 or 4 x 6 photo on a quality flatbed scanner?
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Re: Flatbed Scanner Specs
Old 08-20-2004, 02:15 AM   #2 (permalink)
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Your quality will be much better with the slide scanner (or a negative) than with a print on a flatbed. If you scan an 8x10 @ a high resolution and try to enlarge it too much, it will degrade significantly. It is sort of like making a copy of a copy. It depends on what you are using the final image for. If it is just for an ink-jet print or a low-quality printed piece (mag or newspaper) it may be fine, but for a high-quality print. Stick with the slide scanner.

Now, there are very expensive drum and flatbed scanners that can do incredible things, but you won't find those at the local electronics store.
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Re: Flatbed Scanner Specs
Old 08-20-2004, 01:46 PM   #3 (permalink)
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A 4800dpi scan of an 8x10 photo will result in an image with pixel dimensions of approximately 38,400 x 48,000.

If you're printing at 300dpi, you'd get a print of approximately 128 x 160 inches, provided your printer could support it.
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Re: Flatbed Scanner Specs
Old 08-21-2004, 08:28 AM   #4 (permalink)
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I have a Nikon Coolscan slide scanner and I also have an HP Scanjet 3C flatbed scanner and in all honesty, I have not been able to get a decent quality slide scan as compared to scanning a print on my flatbed. The flatbed scans are crystal clear and shart while the slide scans are muddy and, in my work as a stock photographer, unacceptable for submission as a digital file to editors. I end up just having to send dupes of my slides and it's a pain in the arse. My flatbed scans look terrific and work perfectly for use in submitting digital submissions. Now, in all fairness to slide scanners, I KNOW they make incredible scans but for whatever reason, I cannot get my Coolscan (which wasn't cheap, by the way) to make a really nice scan. I'm not sure if it's software or my lack of knowledge on how to fine tune the scanning options but I gave up on the slide scanner and am using my new D70 and my flatbed to do all of my work.

Good day!

Mike
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