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Thread: Check your adapter mounts

  1. #1
    Administrator, Instructor Guy Mancuso's Avatar
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    Check your adapter mounts

    I have 4 adapters and all of them the mounts where lose. 2 Metabones 1 Novaflex and the Sony adapter I had to tighten down every one of them with a small Phillips head. This could lead to many issues. These are all brand new. These are all on the lens side of the adapters . Get your screwdrivers out and check them.
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    Re: Check your adapter mounts

    Guy, thanks for the heads up!
    J. Paul

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    Re: Check your adapter mounts

    Thanks Guy all mine (n=6) are tight.

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    Re: Check your adapter mounts

    Hmm, I may be mistaken but IIRC some adapters can be shimmed and adjusted.
    So, do they have to be tight? I simply don't know.

    For example I have been given the choice to send in my Phigmenttech.ca adapter so that it gets upgraded for that purpose.
    https://www.phigmenttech.ca/lmnex/in...age=FAQ#adjust
    With best regards, K-H.
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    Re: Check your adapter mounts

    I checked my Sony LA-EA3, all screws tight. My Metabones M to E mount adapter seemed tight, but I was able to tighten the screws a 1/2 turn or so (using a 1.5mm hex key).

    I'm having second thoughts on the Metabones. There's almost certainly a recommended torque setting. The screws may not be designed to be fully tightened, to allow for thermal expansion.

    If the mounting plate is loose, obviously one should tighten the screws, but not all screws are designed to be fully tightened.
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    Re: Check your adapter mounts

    Quote Originally Posted by k-hawinkler View Post
    Hmm, I may be mistaken but IIRC some adapters can be shimmed and adjusted.
    So, do they have to be tight? I simply don't know.

    For example I have been given the choice to send in my Phigmenttech.ca adapter so that it gets upgraded for that purpose.
    https://www.phigmenttech.ca/lmnex/in...age=FAQ#adjust
    I may have to do the same with my Phigment adapter which does not reach infinity.
    Carl
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    Senior Member stephengilbert's Avatar
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    Re: Check your adapter mounts

    "There's almost certainly a recommended torque setting. The screws may not be designed to be fully tightened, to allow for thermal expansion."

    Torque recommendations are normally set based on the bolt/thread material and thread size, to ensure that the fastener is tight enough not to loosen, but not so tight as to strip the threads. I think it unlikely that adapter designers would expect fasteners to be looser that proper to shim a lens.

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