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K 20/1.4 AL

General Description

Product Information
Exact NameSMC PENTAX 1:1.4 20mm
Colorblack
Years of Production1976

Technical Specifications

Optics
Optical Formula11 elements in 10 groups
Aperture Rangef/1.4 ~ f/22
Number of Aperture Bladesunknown
Minimum Focusing Distance0.25 m
Maximum Magnificationunknown
Special Featuresaspherical element(s)
Mechanics
Filter Diameter77 mm
Maximum Diameter80 mm
Length65 mm
Weight445 g
Accessories
Capunknown
Fitting Hood(s)unknown
Fitting Case(s)unknown