Reddit reviews Sigma 17-50mm f/2.8 EX DC OS HSM FLD Large Aperture Standard Zoom Lens for Pentax Digital DSLR Camera
We found 1 Reddit comments about Sigma 17-50mm f/2.8 EX DC OS HSM FLD Large Aperture Standard Zoom Lens for Pentax Digital DSLR Camera. Here are the top ones, ranked by their Reddit score.
For use with smaller chip APS-c or 4/3 digital cameras onlyOffers Sigma's OS System (Optical Stabilization) allowing handheld photography even in low-light situationHSM (Hyper-Sonic Motor) ensures a quiet & high-speed auto focusFLD glass elements with performance equal to fluorite glass for compensate for color aberrationUltra compact with overall length of just 3.6"
https://www.amazon.com/Sigma-17-50mm-Aperture-Standard-Digital/dp/B003A6NTIG/ref=sr_1_3?ie=UTF8&qid=1491585413&sr=8-3&keywords=17-50+pentax
$369, but used ones can be in mid $200s