Change sharpness/gamma on DVD player or projector?

Discussion in 'Archived Threads 2001-2004' started by RickardL, Oct 4, 2002.

  1. RickardL

    RickardL Second Unit

    Oct 30, 2000
    Likes Received:
    My DVD player, a Pioneer, has settings for sharpness and
    gamma correction in 10 step settings and my projector,
    a sony 10ht, has settings for sharpness and brightness
    in a range of 0 to 100.
    Now, does it matter where I change things? Should sharpness
    be adjusted on the DVD player or should it be up to the

    I don't know. I fiddled some with it but I can't really
    decide what is "best". At the moment, I have the gamma
    correction turned to the max on the player and therefore
    quite low brightness setting on the projector.

    Any opinions/experiences?

  2. Don Munsil

    Don Munsil Stunt Coordinator

    Jul 27, 2000
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    Gamma and brightness are not equivalent. Gamma adjustments on a DVD player change the shape of the response curve, making it deviate from the standard linear response. You can somewhat compensate by lowering brightness, but you destroy your shadow detail.
    The best thing to do is to set gamma adjustment at factory default (which I assume is 0) and calibrate your brightness using Avia or something similar. Since you're in Sweden and use PAL, the correct brightness will probably be around 50 on the 10HT, assuming you have your black level on the player set to the correct (darker) setting.
    Then for sharpness, I'd use the Avia sharpness pattern, set the 10HT at around 35 sharpness, and then use the sharpness controls on the DVD player to get the minimum amount of obvious ringing you can get on that pattern.
    If you can't get your hands on Avia to check sharpness, then I'd just leave the DVD player at the default position and set the 10HT to 35.
    You might also want to check my 10HT FAQ page at
  3. RickardL

    RickardL Second Unit

    Oct 30, 2000
    Likes Received:
    If I have the Gamma setting to the lower levels, I
    can not see the pluge patterns even with brightness
    at 100. I have set the Gamma high to bring out all details
    and then lowered brightness to the right pluge visibility.
    I fiddled with different video modes back and forth and
    decided that most shadow details were visible with this
    setting. It could be my player, DV-F727, that has strange
    gamma handling.

    Regarding Sweden, it is true that we have PAL with our
    region 2 discs but I have about 75% NTSC disc...

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