arbitrage Offline Upload & Sell: On
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Sweetf8 wrote:
My A9 + Canon 600mm f4 II + MC-11 combo worked pretty well until last night after I updated the camera firmware to V3.10 and MC-11 firmware to V1.16. Autofocus now works intermittently. It will stall at random distances without focus hit but mostly near MFD. For instance, if I aim the lens at couple feet beyond MFD, the camera will try to focus then stops trying without focus hit and just stays there, pumping AF button does not help until I turn the lens focusing ring manually. Changing focus targets does not help including trees, houses, cars...
Camera setting is AF-C and Flexible Spot L. Lens distance setting is at Full or 4.5m-16m
The lens works fine with a Canon camera. Also works fine with Metabones IV combo, just slower AF compared to MC-11.
I wonder if anyone experiencing this behavior.
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Unfortunately I sold my Canon 600II last week and I've decided not to test fate and update either A9 or MC-11....I was holding back anyways but now reading your experience I will certainly be holding back....FW updates have burned me before (most notably a Sigma update to my 150-600C lens that stopped it working with my Canon 1.4TC).
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