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Thread: Zeiss ZF Question

  1. #1
    tetsrfun
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    Zeiss ZF Question

    This may have been answered but I am curious why there is the "forked" interconnect on the ZF lenses. It reminds me of my Nikormat and F-Photonic days. Is there any use for this now?

    Steve

  2. #2
    Member Jeff Turner's Avatar
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    Re: Zeiss ZF Question

    Steve:

    Here is Zeiss' explanation regarding backward compatibility with pre-Ai coupling:

    ZF: SLR lenses with F bayonet mount
    ZF Lens

    ZF lenses are equipped with the AI aperture coupling as well as the pre AI coupling. They do not include CPU coupling. Due to this, exposure metering and control is possible with all corresponding camera models. Used with camera models without AI or fork coupling the aperture is closed to the pre-selected value, but metering and automatic aperture control is not possible.

    Nikon
    F, F2, EL, FE, FM, Nikkormat-Series, F3, FM3A
    F50, F55, F65, F75, F80, F401, D40, D40x, D50, D60, D70, D70s, D80, D100
    FG, FA, F301, F501, F4, F5
    F70, F90/F90x, F100, F601, F801, D1, D1X or D1H
    F6, D300, D3, D200, D700 or D2-Series

    The cameras you mention are on their list of compatible cameras because of the little "fork."

    Cheers
    Jeff T.
    Jeff Turner's Emerging Light Photography
    http://www.EmergingLightPhotography.com

  3. #3
    tetsrfun
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    Re: Zeiss ZF Question

    Thanks for the answer. I just thought is was curious that Zeiss was providing backward compatibility when Nikon isn't. I am not sure when the last Nikon was made that used the "fork" but, IIRC, the last "Photomic meter was 1974. Seeing that "fork" on a new >$1k lens put a smile on my face.

    Steve

  4. #4
    Subscriber Member Jorgen Udvang's Avatar
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    Re: Zeiss ZF Question

    In theory, Nikon may still make lenses with the fork, although I doubt it. I believe at least the 50mm f/1.2 AIS is available from Nikon in a number of countries, and hasn't officially been discontinued. It's possibly just old stock, but Nikon was rumoured to make batches of some of the most popular AIS lenses now and then, at least up until a couple of years ago, when the FM3A was still being manufactured.

  5. #5
    Member Jeff Turner's Avatar
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    Re: Zeiss ZF Question

    There are still some AiS lenses (with the fork) listed on the Nikon Global Site:
    http://imaging.nikon.com/products/im...s/mf/index.htm
    ...and available for purchase, at least a few, at B & H in NYC.
    Jeff T.
    Jeff Turner's Emerging Light Photography
    http://www.EmergingLightPhotography.com

  6. #6
    tetsrfun
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    Re: Zeiss ZF Question

    One last question and then I will stop beating this horse. What was the last Nikon camera that actually used the "fork" to interconnect with the metering system? Of all the pictures of Nikon systems after the Photomic meter, I can not see any connection to the camera system.

    Steve

  7. #7
    Member Jeff Turner's Avatar
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    Re: Zeiss ZF Question

    There were versions of the F2 Photomic the "A" and "AS" both released in 1977 that were auto-indexing (AI) and no longer required the fork. The Nikomat (Nikkormat) FT3 was the first auto-indexing Nikkormat released in the same year.
    Jeff T.
    Jeff Turner's Emerging Light Photography
    http://www.EmergingLightPhotography.com

  8. #8
    tetsrfun
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    Re: Zeiss ZF Question

    Well one more question. So the F Photomic and the Nikkormat up to until 1976 were the last Nikons that "used" the fork"? I still have a couple of lenses from the "Photomic and "old" Nikkormat days.

    Steve

  9. #9
    Member Jeff Turner's Avatar
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    Re: Zeiss ZF Question

    Actually the F2 Photomic SB and Nikkormat FT2 were the last ones to use the fork for indexing, released in 1976 and 1975 respectively.
    Jeff T.
    Jeff Turner's Emerging Light Photography
    http://www.EmergingLightPhotography.com

  10. #10
    tetsrfun
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    Re: Zeiss ZF Question

    Thanks for the info...I guess CZ is serious about backward compatibility.

    Steve

  11. #11
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    Re: Zeiss ZF Question

    Quote Originally Posted by tetsrfun View Post
    Thanks for the info...I guess CZ is serious about backward compatibility.

    Steve
    True while Nikon introduces more and more G lenses without any external aperture ring

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    Super Duper
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    Re: Zeiss ZF Question

    My new F6 and Zeiss ZF lenses are a dream team ... I was glad to see that the F6 allows programing in the Non-CPU lenses. Wish Zeiss would make a 135/2 in ZF mount.

  13. #13
    Subscriber Member Jonathon Delacour's Avatar
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    Re: Zeiss ZF Question

    Quote Originally Posted by Jeff Turner View Post
    There are still some AiS lenses (with the fork) listed on the Nikon Global Site:
    http://imaging.nikon.com/products/im...s/mf/index.htm
    ...and available for purchase, at least a few, at B & H in NYC.
    The highly reputable eBay seller, matsuiyastore, appears to have an endless supply of new and used AI-S lenses. As I'm writing this post they have on sale:

    * 45mm f/2.8P
    * 180mm f/2.8
    * 50mm f/1.2 (new)
    * 20mm f/2.8 (new)
    * 28mm f/2.8 (new)
    * 15mm f/3.5
    * 35mm f1.4 (new)
    * 28mm f/2.0
    * 105mm f/2.8 Micro (new)
    * 55mm f/2.8 Micro (new)
    * 24mm f/2.8 (new)
    * 50mm f/1.4 (new)

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