Wide-angle equivalent to 31.5mm in the 35mm format. Ultra-thin, pancake design, landscapes, buildings, interior rooms. High-grade multi-layer HD (High Definition) Coating. Unique super-compact design in two colors.
Focal Length Description: 21 mm. Camera Lens Description: 21 month. Product Dimensions: 2.5 x 2.5 x 1 inches. Item model number: Pentax 21420.