Pentax-FA HD Limited 31mm F/1.8 (K-Mount) LEN1236

K-Mount Lens/Full-Frame Format Aperture Range: f/1.8 to f/22 High-Grade PENTAX HD Multi-Layer Coating 9 Elements in 7 Groups Super Protect SP Coating 9-Blade Round Diaphragm Integrated Lens Hood Compact Form Factor