Reply To: AF hunting with Sigma 150-600mm f/5-6.3 DG HSM contemporary lens beyond 300mm

[Sudhir Shivaram]

Ok, going through your reply, looks like there is an issue with the lens and you need to take it to service centre. What you have explained – that’s not common and is definitely not how a Sigma 150-600 behaves.
As an alternative – I would recommend you to try and test with a different Sigma 150-600 (if you can rent it) and compare the results.

Rgds,
Sudhir