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FA 31/1.8 AL ED Limited

General Description

Asahi Optical Co., Ltd. is proud to announce the marketing of the SMC Pentax-FA 31mm F1.8 AL Limited as a new addition to its highly acclaimed "Limited" series of interchangeable lenses. Designed for use with the Pentax line of 35mm-format autofocus SLR cameras, this new lens offers exceptionally high image quality and a beautiful aluminum body with metallic silver finish.

The SMC Pentax-FA 31mm F1.8 AL Limited now joins its two popular sister models - the SMC Pentax-FA 43mm F1.9 Limited and the SMC Pentax-FA 77mm F1.8 Limited - and becomes the first in the Limited series to offer a wide-angle perspective. Incorporating a molded-glass aspherical lens elements into its 9-element, 7-group optics, this lens offers sharp, crisp image reproduction, even at the maximum aperture of F1.8, with a very soft rendition of out-of-focus areas. The Pentax-original floating mechanism effectively compensates for fluctuating aberrations, especially when photographing relatively close subjects.

This new Limited-series lens offers a minimum focusing distance of just 0.3 meters (one foot) for the 0.16-times magnification. It even comes equipped with an exclusively designed flower-shaped lens hood, which not only cuts down excessive light but also allows for easy attachment and removal of filters.

Product Variations
Exact NameSMC PENTAX-FA 1:1.8 31mm AL LimitedSMC PENTAX-FA 1:1.8 31mm AL Limited
Colorchromeblack
Years of Production2001 ~ still in production2001 ~ still in production
Availabilityavailable newnew, via special-order
Catalog Number2028020290
Sold with Hoodbuilt-in hoodbuilt-in hood
Sold with Casesoft case: dark red leather, no namesoft case: dark red leather, no name

Technical Specifications

Optics
Optical Formula9 elements in 7 groups
Aperture Rangef/1.8 ~ f/22
Number of Aperture Blades9
Minimum Focusing Distance0.3 m
Maximum Magnification0.16 X
Special Featuresaspherical element(s), extra-low dispersion element(s), ghostless coating
Mechanics
Filter Diameter58 mm
Maximum Diameter65 mm
Length69 mm
Weight345 g
Accessories
Capmetal slip-on cap, 60 mm
Fitting Hood(s)built-in hood
Fitting Case(s)soft case: dark red leather, no name