Ok, let’s start from the beaning. That1cameraguy first reported the AF issue and later on we have also received conformation from Max. That yes the tamron 28-75mm F2.8 Di III RXD Lens Auto Focus Problem, although it occurs rarely and the issues goes away once you switch on-off the camera.
The issue isn’t big, but the best part is Tamron responded very quickly and promised to fix this issue ASAP via a firmware update. Just have look at the problems spotted by two well known Vloggers and Camera Experts.
Notice about 28-75mm F/2.8 Di III RXD (Model A036) Operation
Dear Tamron product users and potential purchasers.
Thank you for your interest in Tamron products.
We would like to announce that we discovered some issues with the auto focus of our new lens, 28-75mm F/2.8 Di III RXD (Model A036) for Sony E-mount, 35mm full-frame mirrorless cameras, released on May 24, 2018. The issues occur primarily when using the camera in video recording mode.
Rest assured, we are evaluating the cause of the error and for the solution to this matter. We expect this issue to be resolved very shortly and we will release a firmware update at that time.
Regarding the firmware updating process, please be assured that the process is accomplished directly through the Sony camera and supported by the Sony firmware updating function. As soon as the process is finalized, we will explain the process in detail on our website.
We sincerely apologize to all users and potential purchasers for any inconvenience this issue may cause.
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