Monitor gamma correction - twice?

Discussion in 'Photoshop' started by Colin D, Dec 15, 2004.

  1. Colin D

    Colin D Guest

    Having had a recent problem with my video card, and having to re-burn
    its bios ( a small problem with some Matrox cards),I found that the
    video card is actually correcting for gamma - set at 2.2 on my Windows
    machine, but Photoshop is also correcting for gamma as well, so the
    resultant gamma is about 4.8 (2.2^2). When I disabled the gamma from
    Photoshop, and left only the video card gamma, the screen rendition of
    images was a much closer fit to the printed images. With both
    corrections active the screen image appeared considerably lighter than
    the subsequent print from a Frontier.

    On thinking about this, I surmised that the video card gamma was
    appropriate, in order to view images from the net via browsers etc. with
    gamma correction enabled, but without Photoshop loaded. Why, then does
    Photoshop inject its own gamma correction if it is already in the video

    Anybody with experience in this area care to comment?

    Colin D, Dec 15, 2004
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