Odd Omega DII Lamp House design - light leak possible?

Discussion in 'Darkroom Developing and Printing' started by Philip Wang, Apr 4, 2004.

  1. Philip Wang

    Philip Wang Guest

    I was looking at my Omega DII lamp house. There are a few big holes on the
    top of the lamp house acting as vent of the heat generated by the light
    bulb. When I turn on the light there are plenty of light coming out from
    those holes projected onto the ceiling and reflected back to the room.

    My question is, is it obvious that this will cause some trouble of light
    leak?

    Anyone tried to cover those venting holes during the enlarging process -
    and I find the lamp house is very hot so venting seems is really needed.

    Thanks,
    - philip
     
    Philip Wang, Apr 4, 2004
    #1
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  2. Philip Wang

    Alecj Guest

    Yes, you are absolutely right, that light being reflected back down from the
    ceiling will deteriorate [fog] your print. But, closing off those holes
    will cause premature failure of your bulb.

    In that case, get some black cloth, like felt, and attach it to the ceiling
    so it won't reflect back. If you'll do some "before" and "after" prints, I
    believe you'll see a difference. Try it. It won't be expensive. Just a
    big square, maybe 3x3' should do it.
     
    Alecj, Apr 4, 2004
    #2
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  3. Alternatively, how about rigging up some kind of light baffle just above the
    holes on the lamphouse? You should be able to do something with black
    illustration board or something similar, to block the light but not the air
    circulation.


    --
    .... but never have I encountered a guy who could not be bothered
    to make his own case on his own show.

    - Eric Alterman on his appearance on Dennis Miller's bomb of a show
    on CNBC (3/17/04)
     
    David Nebenzahl, Apr 4, 2004
    #3
  4. Philip Wang

    Dan Quinn Guest

    I think some part may be missing. Check inside the lamp housing;
    perhaps some empty screw holes. Dan
     
    Dan Quinn, Apr 4, 2004
    #4
  5. Philip Wang

    RWatson767 Guest

    Philip
    There is a cone shaped baffle missing. Send me a picture of your lamphouse and
    I will see what I have in the rat hole.

    Bob AZ
     
    RWatson767, Apr 5, 2004
    #5
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