SMC Pentax-M 50mm F2 Reviews - M Prime Lenses - Pentax Lens Reviews & Lens Database
Pentax SMC 15mm F3.5 Ulta Wide Angle Rectiliner Film Era K Mount Prime Lens EUC | eBay
Pentax Forums - In our latest in-depth review, we take a close look at the Samyang 16mm F2, a fast ultra-wide prime perfect for landscapes or star photos: http://www.pentaxforums.com/reviews/samyang-16mm-f2-ed-as-umc-cs/introduction.html | Facebook