Ultra-wide Pentax 645 medium format lens, 22mm equivalent perspective with SMC coating for architecture and landscapes.
The Pentax SMC Pentax-A 645 35mm f/3.5 is a wide-angle lens for the Pentax 645 medium format system, providing a field of view equivalent to approximately 22mm on 35mm film. This makes it one of the widest lenses available for the 645 system, offering dramatic wide-angle perspectives on the large 6x4.5cm film frame.
Optically, the lens benefits from Pentax's Super Multi Coating technology to control flare and ghosting, critical for a wide-angle lens that is frequently pointed towards light sources. The rectilinear design keeps straight lines straight despite the wide angle, making it suitable for architectural and interior photography in medium format.
Build quality is robust with all-metal construction and the A-series designation indicating compatibility with the Pentax 645's programmed automatic exposure modes. The focusing ring is smooth with well-spaced distance markings for zone focusing, and the compact dimensions keep the lens manageable on the already substantial 645 body.
The SMC Pentax-A 645 35mm f/3.5 offers dramatic ultra-wide perspectives in medium format at reasonable used prices. For architectural and landscape photographers shooting the Pentax 645 system, it provides a wider field of view than any standard zoom can achieve, with the resolution advantages of the larger film format.