Douglas L wrote:
Thanks again, Ross. I read somewhere more than once that if compressed raw is chosen, the AF calculation drops from 60/seconds to 30/seconds? I wish there is an official Sony white paper with the technical details. Both ChatGPT and Gemini got conflicting information.
You can trust Mark Galer’s info. It’s the opposite of what you heard - AF calculations drop to 30 per second if you are shooting in one of the 14-bit raw settings - Lossless or HQ - and when you choose standard Compressed (which is lossy) it goes to 12-bit and now you have the maximum 60 calculations per second (but your A1II is still better at 120 per second in full 14-bit). Jan Wegener also reports this same info and says it came from Sony.
Here is the slide from Mark Galer’s video review:
Jun 28, 2026 at 08:24 AM
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