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Thread: everyone's favorite topic: what lens is this??

  1. #1

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    everyone's favorite topic: what lens is this??

    no pictures until later

    lens itself is black body, barrel, marked 8.5 inch f5.6 Anastigmat.

    On the front rim is: A.M. and a crown and then No. 2

    might be a process lens

  2. #2

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    Re: everyone's favorite topic: what lens is this??

    "A.M." means Air Ministry, Crown indicates Crown property. An aerial camera lens used by the RAF. There are very few process lenses as fast as f/5.6.

    Count reflections. Probably a tessar type, also might be an Aviar

  3. #3

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    Re: everyone's favorite topic: what lens is this??

    Quote Originally Posted by Dan Fromm View Post
    "A.M." means Air Ministry, Crown indicates Crown property. An aerial camera lens used by the RAF. There are very few process lenses as fast as f/5.6.

    Count reflections. Probably a tessar type, also might be an Aviar
    dang...thanks!!! I KNEW I had seen A.M. before ...just couldn't reach it in my brain filled with bellows compensation numbers and filter factors and stuff...yeah..it came with a marked Aviar lens

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