In article <31F2304B.2AF3@acmenet.net>, chimera@acmenet.net says...

>I'm looking for a "do all" kinda zoom and have set my sights on a
>28-200mm zoom. The three in the business seem to be Vivitar,Sigma and
>Tokina.
> Has anyone looked at these lenses?I'm particularly interested in a
>manual lens for Nikon F,F3..of an aspherical nature.

Um, I can't help asking why you would put a snapshot-quality lens on
a fine camera body. Buy a point-'n'-shoot, if it is convenience that
you are after (ANY Nikkor ['cept {mebbe...} the infamous 43-86mm...]
will easily outperform a 28-200mm zoom. I do know the temptation (I
tried the Tamron, ugh!;-), but it is best to resist, if it is
high quality images that you are after.
Hope This Helps