Boris, I use #3 and I am happy with it. I bought it after 17-70mm (Sigma) and 24-60mm (Sigma) as a fixed aperture standard lens with a useful wide end. However, I increasingly find myself leaning towards primes. So, it sees less use than I envisioned. I am even thinking of selling my 10-20mm (sigma) for the DA 15mm ltd.
I use SR of the body. (The stabilized lens does not seem to make me happy). AF speed is fine and noiseless. Bulent --------------------------------------------------------------------- http://photo.net/photodb/user?user_id=2226822 http://www.pentaxphotogallery.com/bulentcelasun 2011/3/10 Boris Liberman <[email protected]>: > Hi! > > I am thinking (as in: considering, contemplating) about getting myself a > standard SDM zoom lens. Presently the options are: > > 1. Pentax SMC DA* 16-50/2.8 (and some more letters) > 2. Sigma EX DC 18-50/2.8 HSM (and some more letters) > 3. Sigma EX DC OS 17-50/2.8 HSM (and yet more letters) > > #2 is discontinued. I checked the local prices of #1 and #3 and #3 is about > 25% cheaper. The company that offers Sigma (similar to Karat playing the > role of Pentax Israel) seems to be pretty good. They also offer 2 years > warranty on the lens. > > #1 has weather sealing, #2 and #3 seem unprotected. > > Now, I wonder if anyone on the list is using Sigma HSM lenses with their > K-5/K-7 bodies in general and these two in particular. If so, I'd like to > hear your opinion. > > I am leaning towards #3 but it is all extremely preliminary. > > Boris > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
