Probable silly question but....

Discussion in 'Projectors, Screens & Video Processors' started by petrolhead, Apr 26, 2002.

  1. petrolhead

    petrolhead
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    How do I mask the top and bottom of the projector lense.

    I am sure I heard from someone (Or they may have been taking the pi$$) that they used card.

    I am trying to get rid of the light spill when viewing 16:9.

    Any thoughts
     
  2. tahustvedt

    tahustvedt
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    You can't kmask the lens. The masking will be very out of focus and the edge will only be a blur on the wall/screen. You need to place the masking at least 12" from the lens for the masking to be useful.

    Try holding your hand right in front of the lens and you'll see. The only way you can mask the lens would be to mask the inside of the projector.


    Tor Arne
     
  3. richard plumb

    richard plumb
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    best to mask the screen
     
  4. petrolhead

    petrolhead
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    What could I mask the screen with then?
     
  5. Dubbing Mixer

    Dubbing Mixer
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    Depends on what screen you have. Black velvet is the best 'light trap' But it would be difficult to use on a retractable screen.
     
  6. petrolhead

    petrolhead
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    Yeh its a retractable. Hmm what next?
     
  7. Geoffc10

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    Should have gone for a fixed screen maybe
     
  8. petrolhead

    petrolhead
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    No can do. The screen is in front of the window.
     
  9. Kramer

    Kramer
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    Get a 16/9 projector - no masking required :D

    Sorry, couldn't resist:D

    Black velvet is definately the best, but with your screen in front of a window (like mine), it's going to be mighty difficult.

    If you have a sudden flash of inspiration, post it here.
     
  10. Dubbing Mixer

    Dubbing Mixer
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    I've thought about this a lot because I want to install a second screen in the sitting room (in front of a window). There are ways of doing it documented on AVS forum etc. but they are fairly complex and or expensive.

    About the simplest one I've come up with is a two roller system. The main screen with an appropriate length of of built in black at the bottom and a second roller with black masking for the top. Varying the masking is then just a matter of juggling the drop of the two.

    If anyone comes up with a better (simpler) answer......
     

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