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  1. #1
    EKDobbs's Avatar
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    35mm Lens for LF

    I recently disassembled a Kodak Signet 35, and I'm too lazy to figure out how the lens goes back on. So I was thinking, why not just slap it into a light proof box and make some paper negs!

    So I was just curious, would such a thing even work? It's a 44mm f/3.5 lens, with about 10mm of focus movement. I'm looking to do 8x10s, but I'd be happy with 5x7.

    Thanks!
    In other worlds he has
    darker days, blacker swells.
    Strokes that mix noir revenge
    on waves of grey.

  2. #2

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    Won't work. The Signet's lens has to cover 24 x 36 mm, i.e., a 43 mm circle. It probably just covers that. Lenses for 5x7 have to cover 210 mm, for 8x10 have to cover 300 mm.

    There's a reason why LF shooters don't use lenses for small formats, and it isn't love of spending more than necessary.

  3. #3
    Rick A's Avatar
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    This is with an 80mm lens on a 4x5.

    http://www.apug.org/forums/members/r...brom-8x10.html
    Rick A
    Argentum aevum

  4. #4

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    If you'd make a very close close-up picture it might work.

  5. #5
    BetterSense's Avatar
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    My favorite LF macro lens is from an RB67. It easily covers 4x5 at most 'indoor' ranges, covers with movements at macro ranges, and stops down farther than most LF lenses.

    A lens for 35mm is probably pushing it, though.
    f/22 and be there.

  6. #6

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    Quote Originally Posted by EKDobbs View Post
    I recently disassembled a Kodak Signet 35, and I'm too lazy to figure out how the lens goes back on. So I was thinking, why not just slap it into a light proof box and make some paper negs!

    So I was just curious, would such a thing even work? It's a 44mm f/3.5 lens, with about 10mm of focus movement. I'm looking to do 8x10s, but I'd be happy with 5x7.

    Thanks!
    Not even close. That lens has a sharp image circle of about 45mm, you will need a 160~mm IC for 4x5.

  7. #7

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    Quote Originally Posted by swchris View Post
    If you'd make a very close close-up picture it might work.
    Yes, if you reverse the lens and work at 5 or 6 times lifesize.

  8. #8

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    I have an extra Kodak Signet 35 lens+shutter assembly (along with two complete cameras). I've long had this idea that I would mount it on a board for my bag-bellows baby Gowland and try using it to make circular pictures on 120 roll film. One of a grillion projects that haven't advanced beyond concept, alas. So many ideas, so little time...

  9. #9
    Steve Smith's Avatar
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    Quote Originally Posted by E. von Hoegh View Post
    Yes, if you reverse the lens and work at 5 or 6 times lifesize.
    Don't need to reverse it if you can move it far enough away from the film.


    Steve.
    "People who say things won't work are a dime a dozen. People who figure out how to make things work are worth a fortune" - Dave Rat.

  10. #10

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    Quote Originally Posted by Steve Smith View Post
    Don't need to reverse it if you can move it far enough away from the film.


    Steve.
    You do need to reverse it if you want a reasonably flat field.

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