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7' Othello screen and Infocus 5700 - screen texture visible on light areas

Discussion in 'Projectors, Screens & Video Processors' started by leedavies, Aug 20, 2004.

  1. leedavies

    leedavies
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    Had my 7' Othello (Owl?) screen and Infocus 5700 projector installed yesterday. Very pleased.

    But... bright (near-white) areas of the picture clearly show the screen texture (a stippled effect), so the image appears to have a static watermark in some areas.

    I'm going back to Sevenoaks tomorrow to check their demo system (don't remember seeing this in-store).

    Is this kind of effect normal?
     
  2. hornydragon

    hornydragon
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    can be as the screens do have a gain, try turning brightness down a bit, Have you set the values interms of brightness etc on the PJ????? Also is the screen tab tensioned? we have both Tab and standard othellos and i have not seen this effect on the Tab Screen!
     
  3. leedavies

    leedavies
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    Screen is not tab tensioned - just the standard electric version.

    Have tried changing brightness etc and seems to make no difference. Is difficult to explain. Almost as though the picture is being projected onto a subtle wall render, but only noticeable in bright areas.

    Dark images look great though.
     
  4. hornydragon

    hornydragon
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    yeah its the screens gain mate not alot you can do.
     
  5. leedavies

    leedavies
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    Turns out it's not the screen gain after all - I was sent the wrong screen.

    The screen I got was a pearlescant finish, rather than matt white. Owl have been superb and have arranged replacement and installation - should be all sorted this week.

    Can't recommend Owl highly enough - their support over this has been excellent!
     
  6. Gary Lightfoot

    Gary Lightfoot
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    I think you'll find Pearlescent is a 'high' gain screen with a gain of 2 rather than 1 (unity) which is the gain of a standard matt white screen. Anything over 1.5 can be prone to hot-spotting with a reasonably bright projector.

    Gary.
     

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