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PENTAX smc DA 21mm f/3.2: A compact and robust wide-angle lens is a necessity in any photographers camera bag.
Hamburg / Cologne, September 2006
With newly developed, high-performance optics, this new lens measures only one inch (25 mm long) and weighs a mere 4.9 ounces (140 g). Mounted on a Pentax digital SLR camera body, the lens protrudes very little from the cameras front panel, making it an ideal choice for carry-everywhere, instantaneous snapshot photography. This versatile angle of view produces natural images with a moderate perspective and an expanded depth of field (or a wide in-focus area), making it ideal for many different types of subjects and occasions, including snapshots, landscape, travel photos, and architecture. The DA 21mm incorporates a hybrid aspherical lens in its eighth optical element to effectively compensate for a variety of aberrations, which cause adverse effects on overall image quality. In order to assure high-quality image reproduction over the entire focusing range, it also features a floating mechanism, which is designed to adjust the degree of aberration compensation in relation to the focusing distance.
Major Features
- Ultra-thin, super-lightweight design
- Versatile wide-angle perspective
- High-performance optics
- Limited lens-series quality for distinctive visual description and a premium appearance
- SP coating to protect the lens against water and grease
- Digital SLR-exclusive design
- PENTAX-developed Quick-Shift Focus System
- Minimum focusing distance of 20 centimeters for close-up photography
- Dual filter attachment design
Specifications
Lens: smc DA 21mm f/3.2
35mm format equivalent: 32mm
Lens mount: PENTAX KAF bayonet, metal
Angle of view: 68?
Construction: 8 Elements/5 Groups
Aperture control: Fully automatic
Largest aperture: f3.2
Smallest aperture: f22
Metering method: TTL Open aperture metering
Focusing range: 02m - ?
Magnification: approx. 1:5.9 (0.17x)
Filter size: 49 mm
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