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F 100/2.8 Macro

General Description

Focus Range Limit Switch; what this does is to allow you to limit the focus range to 1/4x (= about .6 meter) or closer

Product Information
Exact Namesmc PENTAX-F 1:2.8 100mm MACRO
Colordark grey
Years of Production1987 ~ 1991
Availabilityused, several times a year
Catalog Number28990
Sold with Hood
Sold with Casesoft case: S80-160

Technical Specifications

Optics
Optical Formula9 elements in 8 groups
Aperture Rangef/2.8 ~ f/32
Number of Aperture Blades8
Minimum Focusing Distance0.31 m
Maximum Magnification1.0 X
Special Featuresfixed rear-element extension (FREE), macro lens
Mechanics
Filter Diameter58 mm
Maximum Diameter74 mm
Length104 mm
Weight590 g
Special Featuresfocusing limiter
Accessories
Capplastic clip-on cap, 58 mm
Fitting Hood(s)no hood required
Fitting Case(s)soft case: S80-160