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Sony A 7r Problem with Canon EF lens diaphragm closed on disconnection from camera!


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I recently had my Sony Alpha 7r repaired and checked out at the UK Sony Centre. All seems to be fine except I have just noticed that all my Canon EF lenses come off the Sony (with Metabones MK4 adaptor) with the diaphragm closed down to the aperture set rather than fully open!

The lenses come off my DSLR with the diaphragm fully open. Is this a known fault? I have contacted Sony again to ask for advice. Should I update the firmware for the Metabones adaptor? Does any one have experience of this problem?

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