are preview scans necessary?

  • Thread starter Thread starter Tim923
  • Start date Start date
Tim923 said:
If I know exactly where a picture is laid on the glass, can I skip the
preview scan, or does the preview scan determine color qualities
before the real scan?
Click to expand...

It could easily depend on your scanning software. In principle, if you
have the right settings, the software should allow you to choose to skip
the preview, but you would have to look at your particular software to
see if it allows it. Otherwise, the software may do the preview first
and then do the scan even if you choose to just do the scan.
 
Tim923 said:
If I know exactly where a picture is laid on the glass, can I skip the
preview scan, or does the preview scan determine color qualities
before the real scan?
Click to expand...
How would you decide if the scan needs some tweeking without a preview?
Jim
 
How would you decide if the scan needs some tweeking without a preview?

I've been scanning 35mm projector slides. The preview scan is usually
small on the screen. Usually I won't know it's flawed until I see the
full size bitmap file.

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