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Thread: Light Leak

  1. #1

    Join Date
    Oct 2007
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    86

    Light Leak

    I bought a used sinar f2 some weeks ago. Last week I took about 5 testhots. Today i got the negatives back and recognized a strange light on one negativ (the other 4 are perfect.)
    Where do you think the light comes from? I used a brand new bag bellows!
    Maybe the Filmholder?


    http://i172.photobucket.com/albums/w...chteinfall.jpg
    Check out the left side!
    (I donīt have a scanner at the moment so i used my lighttable and digi camera)

  2. #2
    Octogenarian
    Join Date
    Sep 2003
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    Frisco, Texas
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    3,532

    Re: Light Leak

    Looks like the film holder was not seated properly into the back of the camera.

    Possibly the film holder was lifted away from the camera while pulling or inserting the slide.

    Or, a warped or defective holder.

  3. #3

    Join Date
    Feb 2007
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    Van Buren, Arkansas
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    Re: Light Leak

    Yep, that looks like a film holder issue, not a camera issue.

  4. #4

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    Oct 2007
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    Re: Light Leak

    Thanks,
    Isn`t it strange that the light is not 100% at the edge? It looks proper exposed next to the left edge.

  5. #5

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    Oct 2007
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    Re: Light Leak

    I think I`ll buy cheap b/w film and do test shots with all holders...It would suck when that light issue happens during a job.

  6. #6
    kev curry's Avatar
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    Re: Light Leak

    It would be cheaper to use RC printing paper to test the holders.... if you have some. Cut the paper to fit the holders and then leave them in strong light for 5 minutes, that should tell you if its the holder/s.

  7. #7

    Join Date
    Oct 2007
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    86

    Re: Light Leak

    Quote Originally Posted by kev curry View Post
    It would be cheaper to use RC printing paper to test the holders.... if you have some. Cut the paper to fit the holders and then leave them in strong light for 5 minutes, that should tell you if its the holder/s.
    great idea, thanks!

  8. #8

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    Feb 2007
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    Van Buren, Arkansas
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    Re: Light Leak

    I think you accidentally bumped the holder when you inserted or removed the dark-slide. This causes this "minor" type of light leakage. I always hold the back of the camera with my thumb firmly on the ground glass when I insert or remove a darkslide. This keeps an extra bit of pressure on the holder.

  9. #9
    Henry Valtonen L&Scape's Avatar
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    Dec 2007
    Location
    Helsinki
    Posts
    40

    Re: Light Leak

    I just fixed a similar light leak on my camera.
    If the blue light comes from the edges of the film, you should suspect your sheet film holders. If the light comes like in your example you should suspect camera back (if your film holder seats properly).
    You can test any leaks by "exposing" two or more films for 10-30 min in daylight WITH THE LENS CAP ON. Then develop. If your sheets are unexposed, the you do not have a problem. If there is any light, please check the camera back. Old velvet sealings should be replaced or changed.
    Henry Valtonen, Helsinki
    -----------------------
    8x10" landscapes

  10. #10

    Join Date
    Oct 2005
    Location
    Santa Cruz, CA
    Posts
    2,094

    Re: Light Leak

    I had a friend with a similar issue on an Arca Swiss. It turned out that he had the bellows installed sideways....

    I don't know if this helps at all, just thought I'd pass it along...

    Lenny
    EigerStudios
    Museum Quality Drum Scanning and Printing

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