smc PENTAX-FA645 400mm F5.6 ED [IF]

PENTAX’s medium-format, manual, autofocusing telephoto lens features a 35mm-equivalent focal length of 315mm. Extra-low Dispersion (ED) elements improve image quality by reducing chromatic aberrations, while multi-coating not only protects but further prevents reflection to reduce ghosting and flare.

Easily switch between autofocusing and manual focusing. The Inner Focus (IF) mechanism additionally allows for manual focus operation, improves focusing speed, and lessens lens extension, which gives a closer minimum focus distance.

Features a rotating tripod collar with clip, which allows for swift changes between vertical and horizontal configurations.

smc PENTAX-FA645 400mm F5.6 ED [IF]
Lens Mount PENTAX 645AF2 bayonet
Angle of View 10° – 645 Film
7.9º – 645Z, 645D
Focal Length 400mm (Equivalent to 315mm in 35mm format)
Lens Construction(group/elements) 7 elements in 6 groups
Min. Aperture (f) F45
Min. Focusing Distance 3.0m (9.8ft)
Max. Magnification 0.14X
Filter Size 77mm
Diameter & Length (mm) 83mm x 252mm
Weight (g) 1260g
Number of Diaphragm Blades 8
Hood PH-RBE77
Model No. 26555