A 50/2.8 Macro

A 50/2.8 Macro

General Description

This lens employs floating elements, a construction normally used for better optical performance at small focus distances. The floating group is the one directly behind the front lens.

Product Information
Exact Name smc PENTAX-A MACRO 1:2.8 50mm
Color black
Year of Introduction 1984
Catalog Number 28190
Sold with Hood
Sold with Case hard case: HA-90

Technical Specifications

Optics
Optical Formula 6 elements in 4 groups
Aperture Range f/2.8 ~ f/22
Number of Aperture Blades 6
Minimum Focusing Distance 0.24 m
Maximum Magnification 0.5 X
Special Features floating elements, macro lens
Mechanics
Filter Diameter 49 mm
Maximum Diameter 63 mm
Length 50 mm
Weight 220 g
Accessories
Cap plastic clip-on cap, 49 mm
Fitting Hood(s) no hood required
Fitting Case(s) hard case: HA-90