New product
The lens optics incorporates four ED (Extra-low Dispersion) glass and one Super ED (Extra-low Dispersion) glass optical elements to minimize chromatic aberration and prevent color bleeding, not only in the main in-focus area, but also in the surrounding defocused areas.
It also features a large-aperture negative meniscus optical element, a biconvex aspherical glass-mold optical element, and a high-refraction glass optical element in the first lens group, to reduce the overall size despite the ultra-wide-angle design, while delivering outstanding imaging performance for sharp, crisp images without fuzziness, even in the peripheral areas. The lens also features PENTAX-original HD Coating.
This lens incorporates an electromagnetic diaphragm mechanism (lens features the KAF4 mount, and is compatible with electromagnetic diaphragm control) to assure high-precision exposure control when used in combination with compatible digital SLR cameras. It assures smooth, worry-free video shooting in locations prone to considerable brightness changes, such as a stage with rapidly changing lighting conditions, or a forest with filtering sunray.
For use in demanding conditions -- such as at waterfronts or in sudden rainfall -- the lens features a dependable weather-resistant construction. By pairing it with a PENTAX weather-resistant digital SLR camera body, the user can create a highly dependable, airtight digital imaging system that performs superbly even in the most demanding shooting locations -- in rain or mist, or at locations prone to splashing water.
Lens mount | Pentax K |
Lens Format Coverage | Full Frame |
Lens Design | Prime Lenses |
Lens focus length, mm | 21 |
Focus Type | Autofocus |
Image Stabilization | No |
Lens type | wideangle |
Filter size | 49mm |
Maximum Aperture | f/2.4 |