Sony A7iii + Tamron 17-28mm F2.8 Autofocus Problem

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jarvasm
jarvasm Regular Member • Posts: 185
Sony A7iii + Tamron 17-28mm F2.8 Autofocus Problem

I wonder if anybody else came across this issue. 2-3 times out of 10 the lens doesn't want to focus after switching on the camera. It does it in AF-S and AF-C too. Actually in AF-C it's worse as the little squares light up in green for a half a second and you think the photo is properly focused. Also tried in Wide and Flexible focus area settings, it doesn't really matter. Switching off and on the camera solves the issue, nothing else helps.

Did I manage to buy a faulty one or is it a firmware issue?

Used camera is an A7iii with FW 3.01 and the lens is the Tamron 17-28mm F2.8 FE with FW 1.00. The lens bought as brand new. As I see there is no newer firmware available for this lens yet.

Here is the screen video I recorded with my phone: https://youtu.be/k4j2D8jql3w

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Sony a7 III Samyang 135mm F2.0 Sony FE 85mm F1.8 Tamron 17-28mm F2.8 Di III RXD +3 more
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