M* 300/4

M* 300/4

General Description

This was the very first of the PENTAX * lenses and the only M* lens. Its optical formula lived on in its successor, the smc PENTAX-A* 1:4 300mm. Both lenses by far surpassed the imaging quality of their K series predecessor albeit being much smaller. However, they inherited the same relatively limited minimal focisng distance (4 meters). Although this lens has a built-in hood, Pentax has designed a dedicated hood for it. Strange!

Product Information
Exact Name smc PENTAX-M* 1:4 300mm
Color black
Year of Introduction 1981
Catalog Number 24360
Sold with Hood
Sold with Case hard case: SMC PENTAX 4/300

Technical Specifications

Optical Formula 8 elements in 7 groups
Aperture Range f/4 ~ f/32
Number of Aperture Blades 8
Minimum Focusing Distance 4.0 m
Maximum Magnification unknown
Filter Diameter 77 mm
Maximum Diameter 84 mm
Length 132 mm
Weight 825 g
Cap plastic clip-on cap, 77 mm
Fitting Hood(s) built-in hood
Fitting Case(s) unknown