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Thread: psychedelic chuck (Lighting gurus?)

  1. #21
    Join Date
    May 2003
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    52N 122W Western Kanuckistan
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    @ Max,

    The number of scan lines does not determine the vertical refresh rate. Pal and Secam both use 50 half frames per second which is determined originally by the power line frequency. NTSC uses 60 for the same reason.
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  2. #22
    Join Date
    Apr 2010
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    Canada
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    1,653

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    Quote Originally Posted by Evan
    @ Max,

    The number of scan lines does not determine the vertical refresh rate. Pal and Secam both use 50 half frames per second which is determined originally by the power line frequency. NTSC uses 60 for the same reason.
    I was referring to the horizontal frequency rate.
    Max.

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