Greetings. In a recent shoot we had with some colleagues we used a BMPCC4K as the main camera. Every function was fine, but when we played back the clips to see what we had shot, when we returned to the recording menu the focus had been lost. Is it normal? How do we handle this? Thanks.
No, we were using a Panasonic Lumix Vario 12-35mm II. I think it's mechanical. If I didn't explain it correctly, I mean that we would focus let's say at 12m from the camera, and when we exited playback it would focus automatically to 0.5m. Not exact numbers but to give you an idea.
When go into Playback mode and back to Rec mode the camera does a short soft reboot, resetting also the lens mount. So the lens electronic does a reset too and seems to put the focus somewhere else, as it is relative and not reliably repeatable.
I had a similar issue with my UM46K and a Canon EF 100-400 mm which would re-focus after soft reboot even with AF switched off.
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