Pentax SMC Pentax-M 28mm f3.5 Wide Angle Prime Lens for K Mount -Clean
Vintage Wide Angle Lens for Pentax K-A Mount 28mm F2.8 Ozone - Etsy
Amazon.com : Wide Angle/Macro Lens FOR THE PENTAX K-7 K-X Digital SLR CAMERAS.THIS LENS WILL ATTACH TO ANY OF THE FOLLOWING PENTAX LENSES 18-55mm, 50-200mm : Electronics
Pentax-M SMC 28mm f2.8 K Mount Wide Angle Prime Lens
Rokinon 16mm f/2.0 ED AS UMC CS Lens for Pentax K APS-C 16M-P