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Thread: What did I buy?

  1. #1

    Join Date
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    What did I buy?

    camera show yesterday..found a lens that seemed like a good price.

    I'm figuring it's a military issue enlarging or process lens... but I don't see a match in my searches

    Wollensak 304mm f5.6, W in a circle, mounted in a brass fitting that is army olive drab in color

    no back element, apeture blades behind the front cell(s)

    your guess?


  2. #2
    Lachlan 717
    Join Date
    Apr 2007
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    Re: What did I buy?

    Does it produce an image?
    Lachlan.

    You miss 100% of the shots you never take. -- Wayne Gretzky

  3. #3

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    Re: What did I buy?

    Quote Originally Posted by Lachlan 717 View Post
    Does it produce an image?
    looks great on a GG..covers 8x10 indoors anyway

  4. #4

    Re: What did I buy?

    w in circle means Wo Coated meaning it was a Wollensack coated lens. This lens does look military and reminds me of the Goerz 304mm f5 single achromat lens. This lens is often referred to as a special portrait lend shoots beautifully as a soft focus portrait lens but I believe it was for military use on a tank. I have a few of these and one has a red stamp with some numbers and symbols that look military.

  5. #5

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    Re: What did I buy?

    How many groups and elements does it have? Count reflections, and remember that dim reflections from glass-cement-glass interfaces can be very hard to see.

    From a great distance, and remember that I have a cold and am temporarily nose dead, it smells like the front cell of a telephoto lens. I think I recall discussions of 12"/5.6 Wolly teles.

    Against that, it isn't clear that the rear of the barrel is threaded to accept a rear cell. Is it?

  6. #6

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    Re: What did I buy?

    the rear isn't threaded and the tele's say 'telephoto' on them.. but in a military issue - who knows

    looks like there is two reflections besides the one off the front surface of the lens

  7. #7

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    Re: What did I buy?

    Well, if there are two strong reflections and one weak then the group is a cemented doublet. So is the front half of a classic telephoto lens, but that proves nothing.

    That the rear isn't threaded suggests that you might have an achromatic doublet. If so, the back focus will equal the focal length. Does it?

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