Sigma(Nikon mount) Telephoto Zooms??

[johnmh]

Looking for a long zoom that I can actually carry on back country treks (my Nikon 200-400 is just a bit heavy and large). Considered the Nikon 80-400 but it's not an AF-S.

Anyone have experience with Sigma Zooms - up to 400 or 500mm?

There's a few out there with a new OS 120-400 just hitting stores and an OS 150-500 yet to show. The 'Bigma' 50-500 doesn't have OS (vibration reduction) which I find useful (lots of hand-held and monopod shots).

Interested in any comments - even non Sigma experiences........

 

[RKW3]

I have the Sigma 80-400 with OS, I like it. If you look at my gallery (link in sig), the zoo pics were taken with this lens.