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Old Nov 29, 2003, 10:36 AM   #1
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Default Who needs more than 400 dpi?

Can someone please tell me why my flatbed scanner can scan at up uo 3200 dpi? When I want to scan a photograph or negative do I need to use a setting of any higher than 400 dpi? Why then would anyone need to scan at 3200 dpi?
Why are such scanners produced - am I missing something?

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Old Nov 29, 2003, 3:41 PM   #2
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If you scanned a 35mm negative at 400 dpi you would only be able to create a decent print about 2 x 3" in size. A 35 mm negative scanned at 3200 DPI would give you a decent 8" X 12" print.
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Old Nov 29, 2003, 5:29 PM   #3
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Default Thanks Twcoffee. What dpi for scanning a photograph?

Thanks, twcoffee, that's helpful.
What is the optimum dpi to scan an 8x6" foto at? I want to print the scan at 8x6" size.

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Old Nov 29, 2003, 5:48 PM   #4
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Check out this site for fundamentals of scanning. It doesn't appear to have been updated for the newer scanners but the basics are still the same.

http://scantips.com/


Most pros seem to use 300 DPI as a standard value for printing.
I usually find that prints scanned at 200 DPI is adequate for same size reproduction. A print scanned much above 200 DPI is usually not productive unless you are trying to salvage an small print and print it much larger(although some grain starts to show up at higher scan DPIs).
It is always preferred to use negatives or slides if they are available.
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Old Nov 29, 2003, 6:40 PM   #5
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Thanks again, this site may be just what iI need. I'll get back to you later.
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Old Jun 5, 2004, 4:09 AM   #6
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For Picture scanning only 300 dpi Max 200 dpi is best...the higher resolutions are for cropping etc small areas of picture to be blown up. or for scanning of negatives or slides. Even then some scanner us to much to slow catch all the crap dust etc. Also mostnegativez do not warrent scanning at that d\egree of perfection..can you or I perform to that level? I doubt it. buy a 100 .....150 dollars Epson Canon HP scanner be happy.remember some scammers at high res with 8x10 or bigger require 4 gig of memory....256 512 meg wont do it.
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