Sigma 70-200mm AF issue (only left side focus works)

Started 5 months ago | Discussions thread
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SourGummy
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Sigma 70-200mm AF issue (only left side focus works)
5 months ago

If i set the AF points to anywhere other than those on the left group, majority of the time AF does not work and the lens just keeps hunting for focus. While if I set to the left side focus it's fine. Also if I use all focus points, it will always pick the focus using the left side.

sometimes re-mounting the lens will fix the issue for a few shots then the problem comes up again.

any possible reasoning for this? I have a 3 days job this weekend and won't be able to send the lens to sigma for repair until after the job. So worst case I will either just use the left focus and recompose, or do MF.

PS. tried it on 3 different camera and same problem occur

 SourGummy's gear list:SourGummy's gear list
Sony a77 II Sony 24-70mm F2.8 ZA SSM Carl Zeiss Vario-Sonnar T* Sigma 70-200mm F2.8 EX DG OS HSM
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