Tamron couldn’t stop shouting about its new 28-75mm f/2.8 Di III RXD full frame lens for Sony leading up to its launch. I must’ve received a dozen press releases from them since the beginning of the year announcing its release. Now that its out, though, it seems that it has one big flaw. The autofocus randomly dies, requiring a power cycle of the camera in order to get it working again.
The issue was reported by That1CameraGuy during his initial review of the lens. But now, Tamron has acknowledged the existence of the problem. They don’t know what’s causing it, but they say that they’re trying to figure that out and that a fix will be coming via a firmware update which can be applied through the camera.