Television Gamma or Standard Gamma?

Discussion in 'Mac Basics and Help' started by salils, Aug 5, 2005.

  1. salils macrumors newbie

    Joined:
    Jul 17, 2005
    #1
    Hi, while using the Display Calibrator Assistant in OS X Panther (10.3.9) I have the choice between "1.8 Standard Gamma" and "2.2 Television Gamma" Now since I am a video editor, I would most likely want television gamma, but I though tv's are supposed to be normally brighter than monitors, because standard gamma is actually brighter than television gamma. Which should I choose? And should I adjust the brightness again after changing the gamma? :confused: Any suggestions would be greatly appreciated, thanks.
     
  2. killmoms macrumors 68040

    killmoms

    Joined:
    Jun 23, 2003
    Location:
    Washington, DC
    #2
    There's a difference between gamma and brightness. The gamma curve adjusts the level of black and white compression. IIRC, televisions compress anything below RGB50 as black and anything above RGB235 as white. Computer color space is not designed to do this. If you're doing video work, it's more recommended that you have a separate calibrated NTSC or PAL monitor attached to a deck of some sort connected via Firewire, or attached to an add-in PCI card (BlackMagic, Kona, etc.), rather than trying to do any sort of color adjustment work on the computer monitor. I'd recommend that instead of trying to set the computer monitor to Television gamma.
     
  3. pulsewidth947 macrumors 65816

    pulsewidth947

    Joined:
    Jan 25, 2005
    Location:
    squarefrog.co.uk
    #3
    I have 2 profiles set up - one for everyday use (normal Mac 1.8 gamma), one for web design (normal PC 2.2 gamma). I just switch between the two when I'm doing something. Might be worth doing. I dont know about your software, but when I'm in Photoshop with the colour profile set in PS's preferences, it automatically uses 2.2 gamma so I dont need to switch.
     

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