Tamron Promises to Fix the 28-75mm F2.8 Di III RXD AF Bug

Tamron's new 28-75mm F2.8 Sony E Mount zoom lens (Model A036) just hit stores on May 24th -- and we just got our review sample in, which we'll be testing over the next two week -- but earlier reviewers and customers found a bug when trying to use the autofocus system in video mode.

Here are two videos where the problem appears:

In our initial testing, we generally found Tamron's AF system to work just as well as the Sony's 24-70mm F2.8 G Master AF system on the Sony A7 III. It's all VERY fast and accurate. However, much like the videos above, we did encounter a scenario where the camera focused on the foreground rather than on our selected focus point.

Not to worry, though. Tamron is aware of the problem and already working on a firmware update that will (hopefully) fix the problem. I didn't know this, but apparently, we'll be able to update the lens firmware while it is installed on Sony cameras.

Here's Tamron's full statement on the matter (stay tuned for more!):

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.