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Gain and Cut Off settings for Barco 701s?

Discussion in 'Projectors, Screens & Video Processors' started by Messiah, Dec 29, 2002.

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  1. Messiah

    Messiah
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    Could anyone be so good as to tell me what Red and Blue Gain and Cut Off settings they are using / I should be using (at least as a starting point) on my Barco 701s.

    Looking at how these alter the picture I think the existing settings may be the reason for the lack of detail in the black areas.

    Grateful for any assistance. Thanks.

    Neil
     
  2. Messiah

    Messiah
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    Come on guys. Surely there are some other 701 users out there? :confused:
     
  3. Charlie Whitehouse

    Charlie Whitehouse
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    Neil,

    I'm not sure of the value of sharing settings on this because I suspect they vary hugely from unit to unit. You really need someone equipped with a colorimeter (like Gordon or Roland) to set these correctly so that the projector tracks the colour of grey properly.

    For the record, my Cine 7 currently has the following settings:-

    Custom White (Gain):
    R:20 B:57 G:11

    Custom Black (Cutoff):
    R:60 B:25 G:59

    But I suspect these could be tweaked a bit more. If you change brightness or contrast, these settings all need to be changed again.
     
  4. Messiah

    Messiah
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    Thanks Charlie, appreciated. I recognise every setup will be different but at least I know I'm in the right ball park, as it were.
     
  5. Roland @ B4

    Roland @ B4
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    The Gain and cut of ajustments are made per source and per frequency more as a correction for video sources and cables than any thing else.
    They are used to adjust the colour balance of the black (cut off ) and white (gain).

    They would have to be masively out to reduce the detail in lowlights. I would set the greengain and cut off to 50 and adjust the R&B gain for mid to high grey scale and do the same with cut off for mid to low light grey scale. but as i say you will have to do this for all source and frequency changes individually.
     
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