> > From: > Doug Franklin > John Whittingham wrote: > > >> > If it need not necessarily be a genuine Pentax lens I would recommend the >> > Sigma 400 f/5.6 APO, pretty sharp wide open, great build quality, CA >> > should >> > be non existant as it's an APO lens. There's a test on the Canon fitting >> > version here: >> > >> > http://www.photozone.de/8Reviews/lenses/sigma_400_56/index.htm >> > > I have the Sigma APO 400/5.6 in Pentax K-AF mount and I've been quite > happy with it. I haven't noticed any particularly tendency toward CA, > but I haven't looked for it, either. Where might one find such a beast? It's not in the current Sigma lineup.
OTOH, Sigma is apparently offering its newer DG 500mm f/4.5 in a Pentax AF mount (B&H lists it as "New, Arriving Soon). If I understand, this is a new design that replaces the previous 500 f/4.5 which Sigma had stopped offering in Pentax mount. I have the previous version Sigma 300 f/2.8 and it's a fantastic lens, especially compared against similar lenses at higher price ... so if the DG lenses are improved beyond that, they ought to be very good indeed. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
