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  1. #1

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    Difference between Ilex #3 Acme Synchro and #3 Universal

    I just received an Ilex-Calumet 8.5" f/4.8 Series S Caltar lens in an Ilex #3 Acme Synchro shutter. I had bought a flange off someone previously and found out today that it doesn't fit, in fact the diameter is wider by about an eighth of an inch. I am thinking that the flange might be from a #3 Universal shutter. My shutter does NOT say "universal" simply "#3 Acme Synchro, Ilex Optical Company, Rochester, New York, USA." Strangely enough it also has 2 aperture scales on it, one labeled 8.5" and one labeled 14". Is this lens a convertible? Hopefully I don't have to hunt down a new flange for it and I'm just missing something... Maybe I'll take a trip to the hardware store tomorrow and see if they have anything I can make do with for now.

    - Justin

  2. #2

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    #3 Acme and Universal shutters are the same size. The Acme is cock-and-shoot, the Universal is self-cocking.

    Your lens is convertible, the 8.5" scale is for the complete lens, the 14" scale is for the rear cell.

    www.skgrimes.com will sell you the right flange.

  3. #3

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    Depending on what lensboard yopur using, and whether you could get by with a fairly thin retaining ring sort of solution, you might be able to disassemble a filter and us the female-threaded part of the mount. I have a couple of these lenses, (they're great!), and the threads are a common filter size, I think 49mm...

    Or perhaps a step-ring from the local camera store?

  4. #4

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    Thanks Mark! I'll try some out at work tomorrow and see if it'll make do until I get a proper flange.

    - Justin



 

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