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Hi everyone, I’m reaching out to see if anyone else is experiencing the same issue. I own a Fujifilm X-S20 and recently updated the firmware to version 3.10, which includes changes to the AF algorithm. Since the update, I’ve been having major autofocus issues with my Tamron 18-300mm lens – the camera often struggles to focus, even on static subjects. What’s strange is that the same lens works perfectly on my older X-S10, which hasn’t received any similar AF updates (X-Processor 4). So this clearly seems to be a compatibility issue introduced with the latest AF algorithm changes in X-Processor 5 cameras. I’ve confirmed this across multiple bodies: X-S20 – firmware 3.10 – autofocus issues X-T5 – firmware 4.10 – same problem X-H2 – firmware 5.10 – includes the same AF update X-H2S – firmware 7.10 – also mentions AF revision X-T50 – firmware 1.10 – same story X100VI (X-M5) – most likely shipped with the new AF system pre-installed In contrast, cameras with X-Processor 4 (like the X-S10 and X-T4) still work flawlessly with the same lens. That pretty much confirms the issue lies in the updated AF logic, not the hardware itself. My partner owns an X-H2 and is now hesitant to update the firmware because of how badly my X-S20 now performs. We’ve both contacted Tamron and Fujifilm support, but haven’t received any real solution so far. Is anyone else dealing with this? Have you found a workaround or received any response from either company? If Tamron doesn’t release a firmware update for this lens, it may become unusable on the latest Fuji bodies — which is incredibly frustrating. Thanks in advance!