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M 2000/13.5 Reflex

General Description

The only difference that I am aware of between this lens and its predecessor, the 2000/13.5, is the "-M" which is part of the official name of this lens. In all other respects the lenses appear to be identical.

Product Information
Exact Namesmc PENTAX-M REFLEX 1:13.5 2000mm
Colorblack
Years of Production1982 ~ 2004
Availabilityused, once in several years
Catalog Number24980
Sold with Hoodbuilt-in hood
Sold with Casededicated trunk: no name

Technical Specifications

Optics
Optical Formula6 elements in 4 groups
Aperture Rangef/13.5 ~ f/13.5
Minimum Focusing Distance20.0 m
Maximum Magnification0.12 X
Special Featuresreflex lens
Mechanics
Front-Filter Threadno
Rear-Filter Diameter52 mm
Maximum Diameter180 mm
Length530 mm
Weight8000 g
Special Featurestripod collar
Accessories
Caphard leather slip-on cap, 181 mm
Fitting Hood(s)built-in hood
Fitting Case(s)dedicated trunk: no name

Subjective Evaluation

Since I am not aware of any tests of this lens, I cannot make any comments about its optical performance.