epson scan - do levels adjustment at scan time yield any more infothan post-scan level adjustments?

Discussion in 'Scanners' started by Alex Hunsley, Aug 21, 2004.

  1. Alex Hunsley

    Alex Hunsley Guest

    Ok, a slightly technical question. If I use Epson Scan (or any other
    simialr scaning software) to scan a photo, and change the levels (e.g.
    brightness, contrast, or gamma) before doing the scan proper, does the
    scanner:

    a) somehow adjust its sensitivity to light during the scan process and
    hence genuinely alter the information it picks up
    b) just apply the levels to the scanned image, after the scan, in a
    manner which I might as well just do in photoshop etc?

    alex
     
    Alex Hunsley, Aug 21, 2004
    #1
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