Faldrax Publish time 2-12-2019 07:01:09

This sort of problem was one that Sigma lenses used to suffer from with Sony A Mount cameras - older lenses requiring a re-chip when some new model came out.

As I recall, Sigma would do this FOC if the lens was only a few years old (not sure of the exact cut-off), BUT you had to prove you owned the new camera which gave the problem (as well as having bought the lens within a certain time frame).

Hopefully the advent of the USB docks means this is not an issue, unless you have older lenses (as is the case for the OP)

Bl4ckGryph0n Publish time 2-12-2019 07:01:10

I had a similar experience in my pursuit of a Nikon 70-200 f2.8. I made twice the mistake of going third party, and with Sigma exactly the issues like the OP. In the end I ended getting the Nikon version. In hindsight I wish I did that straight away, saved up for another month or two. I actually would have saved money overall and had earlier enjoyment.

snerkler Publish time 2-12-2019 07:01:11

I had problems with the Sigma too, Tamron g2 is supposedly excellent though.
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