Something to consider about the Sigma is its 82mm filter thread. Apparently, the discontinued Tokina ATX with the same focal lengths uses 77mm filters. Rumor has it the optical quality is roughly the on both lenses (I can't offer any first-hand experience on this).
t On 12/22/04 13:36, Mark Roberts wrote: > "Don Sanderson" <[EMAIL PROTECTED]> wrote: > >> It seems in the past there was a plethora of fast(er) >> 70/80-200/210 lenses available. >> The Vivitar 2.8/4 or 3.5, the Pentax A 4.0, etc. >> All of the new AF lenses seem to be slow, 4-5.6 or slower >> and variable aperture or the other extreme, faster 2.8 constant >> and very, very expensive. >> Does anyone know if there are any reasonably priced AF >> lenses in the f/3.5-4 constant aperture, medium tele class >> made anymore? > > Yes, the f/4.0 "compromise" lens is a good but neglected class. About > the only one I know of is the Sigma 100-300/4.0. I've heard it's good > but it's beyond your focal length range (and price - it's around > $900.00)
