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Thread: What kind of lens is this Steinheil in Munchen?

  1. #1

    Join Date
    Sep 2017
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    What kind of lens is this Steinheil in Munchen?

    Steinheil in Munchen N°34250 Patent

    Diameter of the front lens 62 mm.

    Diameter of the rear lens unknown.

    Length of the lens with the hood 85 mm.

    Click image for larger version. 

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    Images used with the author permission.

    It looks like it has nonstandard f-stop nomination from 1/2 to 16.

  2. #2

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    Re: What kind of lens is this Steinheil in Munchen?

    Steinheil has traditionally most data on the (lost?) flange.

    After his co-discovery of the Aplanat/RR with Dallmeyer (1866?), Steinheil developed a lot of similar lenses which had rather thick glass. Only an expert, of which I am not, can tell them apart!

    One of his oddities was to label with the effective diameter in mm.

  3. #3

    Join Date
    Sep 2017
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    Re: What kind of lens is this Steinheil in Munchen?

    Quote Originally Posted by Steven Tribe View Post
    Steinheil has traditionally most data on the (lost?) flange.

    After his co-discovery of the Aplanat/RR with Dallmeyer (1866?), Steinheil developed a lot of similar lenses which had rather thick glass. Only an expert, of which I am not, can tell them apart!

    One of his oddities was to label with the effective diameter in mm.
    The curious thing about this lens is that I thought that it is a common Aplanat or RR but it fetched fairly high price ~€600 so the buyer must have known something about this lens.

    How should I interpret this non-standard aperture scale?

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