Tony Correa , Sep 08, 2004; 10:50 a.m.
FWIW, I had the original AF version of this lens. Build and optical quality was very good. Sold it when I came across a then very good deal on a Nikkor AFI lens with teleconverters. Had a chnace to compare them. I thought optically they were both very well matched when used by themselves. When used with teleconverters, that's when I saw the biggest difference. The Nikkor with it's dedicated TC1.4AFI was very good. The Tokina with a Tamron TC was just OK. Obviously the TC made a big difference: the Nikkor was a $500 TC, the Tamron, a $100 TC. Build quality: both were well made. The Nikkor definitely much high/better grade. Again we're talking about a $5000 lens vs. a $2000, so no surprise there. The built in AF motor of the Nikkor made shooting sports and the like a piece of cake. The Tokina on an F5 focused fast but not in the same league. This was more pronouced when using the inexpensive Tamron TC. If not shooting sports and the like and don't have need for TCs, I think the Tokina is a good value. the Sigma 120-300/2.8 also seems a good value but do not have any experince with it.