Fri Jan 10, 2020 8:40 pm
I bought a Viltrox EF-M1 lens adapter (without speed booster glass) so I could use a Canon EF-S lens with my BMPCC 4K. When I tried it out with my BMPCC 4K with latest camera firmware, it would perform an auto-focus on power-up of the camera body but not after.
So I went to the Viltrox website, downloaded the latest firmware 3.4, and installed it in the lens adapter. Not only did this NOT fix the auto-focus issue, but it broke the iris control which was working.
I then downloaded and installed Viltrox firmware 3.3, and got back control of the iris. I see in the firmware notes that version 3.3 was to address iris control with the BMPCC 4K and that this firmware applies to the EF-M2 also.
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DR Studio 17.4.1 Win10Pro 21H1/19043.1320 - i7-6700K@4GHz, 32GB RAM
RTX 2070 8GB, "Studio" driver 472.39
OS,Library: 1TB SSD - Project: 1TB SSD - Cache: 1TB NVMe