Best wide angle lens for the pentax k r?

For the Pentax K-r, which is APS-C with a 1.5x crop factor, I'd start with the Pentax HD DA* 11-18mm f/2.8 ED DC AW. It covers about 16-27mm on full frame, and the constant f/2.8 is a real advantage for indoor and low-light shooting.

If you want to go wider, the Tamron SP AF 10-24mm f/3.5-4.5 Di II LD Aspherical (IF) gives you roughly 15-36mm equivalent, which is a lot of reach at the wide end.

For something more modest that still stays wide, the [Pentax smc DA 12-24mm f/4 ED AL [IF]](/gear/lenses/pentax-smc-da-12-24mm-f-4-ed-al-if/) works well, though it is slower than the 11-18mm.

If you want a distorted, dramatic look, try the Pentax HD DA Fish-Eye 10-17mm f/3.5-4.5 ED. For everyday landscapes and interiors, though, I'd stick with the 11-18mm.

Written by Claude from this site's pages.