Thread: EF Lens mount no communication

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  1. #1 EF Lens mount no communication 
    Member Lucas Wilkinson's Avatar
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    Apr 2014
    Jindabyne, NSW, Australia
    HELP! All of a sudden my EF lens mount isn't communicating with my lenses. Have re-attached mount, done a hardware reset, rediscover. Nothing.

    Any help would be great as I'm mid-shoot.
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  2. #2  
    Senior Member Blair S. Paulsen's Avatar
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    Dec 2006
    San Diego, CA
    We have Sigma ART 24mm primes on side by side Ravens that report identical F-stops, but the exposure is not the same. Installed the latest FW, swapped lenses between cameras, etc and are still getting inconsistent results.

    Cheers - #19
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