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 Name | SMC PENTAX-FA 1:1.8 31mm AL Limited | SMC PENTAX-FA 1:1.8 31mm AL Limited |
| Color | chrome | black |
| Year of Introduction | 2001 | 2001 |
| Catalog Number | 20280 | 20290 |
| Sold with Hood | built-in hood | built-in hood |
| Sold with Case | soft case: dark red leather, no name | soft case: dark red leather, no name |
Technical Specifications
| Optics | |
|---|---|
| Optical Formula | 9 elements in 7 groups |
| Aperture Range | f/1.8 ~ f/22 |
| Number of Aperture Blades | 9 |
| Minimum Focusing Distance | 0.3 m |
| Maximum Magnification | 0.16 X |
| Special Features | aspherical element(s), extra-low dispersion element(s), ghostless coating |
| Mechanics | |
| Filter Diameter | 58 mm |
| Maximum Diameter | 65 mm |
| Length | 69 mm |
| Weight | 345 g |
| Accessories | |
| Cap | metal slip-on cap, 60 mm |
| Fitting Hood(s) | built-in hood |
| Fitting Case(s) | soft case: dark red leather, no name |
