I don't own it but I tried the Nikon version at photoplus earlier this year (on my D700, so FF
). That thing is heavy (like: real heavy if you're used to smaller zooms; as my friend Dan says it's a 70-200 2.8 on steroids) but I managed to handhold it for a few shots (indoors, so I couldn't use a fast shutter speed and had to rely on OS
). I have to say I was quite impressed with the results. The shots were sharp at f2.8 and also were very good at f4 when I tried it with the (Sigma) 1.4x extender. AF
seemed pretty accurate and OS
The only thing that'd stop me from buying is Sigma's "infamous" QA
(or lack of) and sample variation. I would have thought that they'd do a more thorough job for their higher end lenses. But I've seen complaints about this one on forums too (sample variation and also AF
issues, i.e., AF
stops working / is inconsistent). So, unfortunately, the usual Sigma warning "this will probably be a great lens, provided you get a good copy" also seems to apply here. It's a bit disappointing as I would seriously consider it for the reasons you are considering it (about half the price of the Nikon 300mm 2.8 and more flexible as it's a zoom).
Make sure you check out the (mostly favorable I'd say) photozone review:
Nikon: we don't want more pixels, we want better pixels.