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K 300/4

General Description

This lens was listed in catalogs as late as 1985, but it is virtually certain that production ended in 1981.

Product Variations
Exact NameSMC PENTAX 1:4/300smc PENTAX 1:4 300mm
Years of Production1975 ~ 19771977 ~ 1981
Availabilityused, several times a yearused, several times a year
Catalog Number2434024340
Sold with Hood
Sold with Casehard case: SMC PENTAX 4/300hard case: SMC PENTAX 4/300

Technical Specifications

Optical Formula7 elements in 5 groups
Aperture Rangef/4 ~ f/32
Number of Aperture Blades8
Minimum Focusing Distance4.0 m
Maximum Magnificationunknown
Filter Diameter77 mm
Maximum Diameter85 mm
Length188 mm
Weight1020 g
Capplastic clip-on cap, 77 mm
Fitting Hood(s)built-in hood
Fitting Case(s)hard case: SMC PENTAX 4/300