I have it. Unfortunately, I have not used my Pentax DSLR's much, in recent times. I only seem to use the (Sigma) 70mm f/2.8 EX DC macro.
However, I remember the days 17-50mm was on. Optically and ergonomically it was very good. The coverage is almost perfect for an all-time, wide aperture, high performance zoom. My copy had no problem with focus (back-, front- or decentralization). Speedwise, it was probably better than similar range Pentax ones. It offers in-lens stabilization as a bonus and you are advised to turn it off if you prefer image stabilization offered by the body. I have always used the sensor based stabilization, due mostly to being accustomed to it. Lens based stabilization made me dizzy! Then came my decision to use primes almost exclusively (just a coincidence, not related to Sigma). I heartily recommend it for everyone who are looking for a fast, standard, affordable zoom with definitely above average optical and mechanical quality. I may start using it again anytime. Bulent --------------------------------------------------------------------- http://patoloji.gen.tr http://celasun.wordpress.com/ http://www.flickr.com/photos/bc_the_path/ http://photo.net/photodb/user?user_id=2226822 http://www.pentaxphotogallery.com/artists/bulentcelasun 2016-07-01 21:02 GMT+03:00 Paul <[email protected]>: > Anyone have any experience or opinions on this lens? > > -p > > > -- > Being old doesn't seem so old now that I'm old. > > > -- > 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.

