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Thread: Help! Mamiya 645 AF (non D) lenses not autofocusing on the 645 DF+

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    Help! Mamiya 645 AF (non D) lenses not autofocusing on the 645 DF+

    Hello all,

    A little while ago, I had purchased a 645 DF+, Credo 40 and 80mm LS combo. I bought the 35mm, 150mm and 210mm AF lenses for the Mamiya 645 platform off KEH last week, which just arrived.

    When I try the lenses on, I see that that the 35mm autofocuses when I half press the shutter release, (I haven't yet changed this behavior), but the 150 and the 210 don't. Not sure why it is so and I tried changing a few things here and there, but neither lens is autofocusing.

    The camera manual isn't proving to be of much use either.

    Anyone know what might be the issue? All help is appreciated.

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    Re: Help! Mamiya 645 AF (non D) lenses not autofocusing on the 645 DF+

    The focusing ring can be moved forward & backward on telephotos, in addittion to turning the ring in manual focus mode. Only turn the ring in manual focus mode. The marking on the lens adjacent to the focusing ring says manual focus when in manual focus, you have to move the ring forward/backward to go to autofocus.

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    Re: Help! Mamiya 645 AF (non D) lenses not autofocusing on the 645 DF+

    Well don't I feel stupid, haha. Never knew there was a focus clutch on these lenses.

    Thanks very much, mate. Cheers!

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    Senior Member kdphotography's Avatar
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    Re: Help! Mamiya 645 AF (non D) lenses not autofocusing on the 645 DF+

    Swap out the 150 for the 150 D. Or the LS.

    Both are worthwhile investments over the early Mamiya 150AF

    ken

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    Re: Help! Mamiya 645 AF (non D) lenses not autofocusing on the 645 DF+

    Quote Originally Posted by kdphotography View Post
    Swap out the 150 for the 150 D. Or the LS.

    Both are worthwhile investments over the early Mamiya 150AF

    ken

    Yep, the plan is to eventually get the 150 and 240LS.

    Sadly, budgetary constraints mean it will have to wait for a while.

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    Senior Member Steve Hendrix's Avatar
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    Re: Help! Mamiya 645 AF (non D) lenses not autofocusing on the 645 DF+

    Quote Originally Posted by synn View Post
    Hello all,

    A little while ago, I had purchased a 645 DF+, Credo 40 and 80mm LS combo. I bought the 35mm, 150mm and 210mm AF lenses for the Mamiya 645 platform off KEH last week, which just arrived.

    When I try the lenses on, I see that that the 35mm autofocuses when I half press the shutter release, (I haven't yet changed this behavior), but the 150 and the 210 don't. Not sure why it is so and I tried changing a few things here and there, but neither lens is autofocusing.

    The camera manual isn't proving to be of much use either.

    Anyone know what might be the issue? All help is appreciated.

    For non D AF lenses, make sure the Focus Control Knob on the lower front corner of the body is set to S (or C for those who like to hunt). Make sure it is not sort of in between modes, I've seen that too.


    Steve Hendrix
    Capture Integration
    Steve Hendrix, Sales Manager, www.captureintegration.com (e-mail Me)
    Digital Cam: Phase One | Leaf | Leica | Sinar Authorized Reseller
    TechCam: Alpa | Cambo | Arca Swiss | Sinar Authorized Reseller

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    Re: Help! Mamiya 645 AF (non D) lenses not autofocusing on the 645 DF+

    Quote Originally Posted by Steve Hendrix View Post
    For non D AF lenses, make sure the Focus Control Knob on the lower front corner of the body is set to S (or C for those who like to hunt). Make sure it is not sort of in between modes, I've seen that too.


    Steve Hendrix
    Capture Integration
    Thanks, Steve. The issue was that I was a bonehead who didn't notice the focus clutch on the lenses. The 35 has a twist switch, similar to the 80mm I have.

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