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M 28/2.8 (version 1)

General Description

In 2007 a gold version of this lens was sold on eBay and it looked so professionally done, that at first I assumed that the lens was factory-made. But Pentax has traditionally only made gold versions of its absolute high-end products (which in this case would have been the M28/2), so now I think that the gold version was not made by Pentax.

Product Information
Exact Namesmc PENTAX-M 1:2.8 28mm
Years of Production1977 ~ 1982
Availabilityused, several times a month
Catalog Number22960
Sold with Hood
Sold with Casehard case: smc PENTAX 2.8/28

Technical Specifications

Optical Formula7 elements in 7 groups
Aperture Rangef/2.8 ~ f/22
Number of Aperture Blades5
Minimum Focusing Distance0.3 m
Maximum Magnification0.13 X
Filter Diameter49 mm
Maximum Diameter63 mm
Length31 mm
Weight156 g
Capplastic clip-on cap, 49 mm
Fitting Hood(s)clip-on hood: PH-S49
Fitting Case(s)hard case: smc PENTAX 2.8/28