Best wide angle lens for the pentax k 5?

For the K-5, wide angle means roughly 10 to 24mm. My everyday pick is the Pentax HD DA 15mm f/4 ED AL Limited. It's small, it frames like 22mm on full frame, and it's a lovely wide to carry all day.

If you want one lens that covers the range, the Tamron SP AF 10-24mm f/3.5-4.5 Di II LD Aspherical (IF) goes from 10mm to 24mm, which is 15 to 36mm on full frame.

For dim interiors and evening shots, look at the Pentax HD DA* 11-18mm f/2.8 ED DC AW. Its f/2.8 aperture stays constant across the zoom, so you keep your exposure as you change focal length.

New to focal lengths? The lenses guide explains how wide is wide.

Written by Claude from this site's pages.