resolution

  • Thread starter Thread starter certsnsearches
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certsnsearches

Will 4800 x 9600 res be good enough to give me quality scans of photos.
If you can recommend a good lower-priced (sub 150 euro) scanner please do.

Brian
 
certsnsearches said:
Will 4800 x 9600 res be good enough to give me quality scans of photos.
If you can recommend a good lower-priced (sub 150 euro) scanner please do.

Brian
Click to expand...
Absolutely.

You do not need more that about 300 dpi for most paper photographs.
If you want to enlarge the photo then you need more resolution. If you scan
at 600 dpi and print at 300 dpi, you double the printed size of the photo.

http://www.scantips.com/basics08.html

For good information on scanning.
http://www.scantips.com
 
Will 4800 x 9600 res be good enough to give me quality scans of photos.
If you can recommend a good lower-priced (sub 150 euro) scanner please do.
Click to expand...

What kind of photos?

Take a 13 x 18 cm (5 x 7 inch) photo and scan it at 4800 x 9600 dpi

-> 4800 * 5 * 9600 * 7 * 6 => 9.6 GB

Are you sure you'll need this resolution?
Agreed, as jpeg the file size will be significantly smaller.

On the other hand you may interpolate this to 65535 dpi, if you got too
much disk space ;-)


Apart from that, those numbers are a fiction. The real resolution that
you can achieve is much lower.

For text a resolution of about 144 dpi is sufficient and 300 dpi is
pretty good. For photos you might use 600 dpi - or scan at 1200 dpi and
shrink this to 600 dpi.

Highest resolution is helpful when scanning e.g. slides. But the real
resolution of these scanners may be much worse that a dedicated slides
scanner.

- Martin
 
Thanks folks....sounds like it will more than do, for my very ordinary use.

Brian
 
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