Hmm. 400mm? Doesn't sound like a zoom to me. Normally that's
expressed as, say "100-400mm".
In addition, over the years Tokina has come to be regarded as one of
the better after market makers, as I understand the writeups in the
mags.
I'd be very suspicious of any seller, eBay or otherwise, who was
selling such a lens for so little unless it's not an autofocus lens.
Why don't you check out a few lens brands in your mm range for a week
or two on eBay and see what they're going for. Then look them up on
the review sites and see how they are rated and what they might have
cost new. Then you'll know better what you're buying.
--
Emily L. Ferguson
mailto:elf@xxxxxxxx
508-563-6822
New England landscapes, wooden boats and races
http://www.vsu.cape.com/~elf/