> >So has anyone had poor results with a late model Sigma lens? > > I had the 28-135 "consumer" zoom for a while. Seemed as well built as > comparably-priced ($200.00) Tamrons & such; quite sharp; suffered > from a little pincushion distortion at the long end. > > I currently own the EX 300/2.8 APO. Outstanding construction and optics.
I been told the AF 24mm f/2.8 has problems with build quality (AF self destructs) the 28-105 f/2.8-4 is supposed to be dog optically. I have the early 24mm and it's been a fine lens for many years and also the 16mm f/2.8 Fisheye, both metal bodied, manual focus. I currently own the 105 f/2.8 EX Macro, fine lens no problems, 300mm F/4 APO, 2x EX converter, 1.4x EX converter and all work without problems on all my Pentax bodies, more than happy with the results. I'd like to get my hands on the 70-200 f/2.8 EX at a reasonable price, I can't afford the Pentax alternative. John
