HD Coating to enhance imaging power

After a thorough review of lens coatings, PENTAX applied HD Coating — Pentax’s latest multi-layer coating — to the lens. Compared to conventional multi-layer coatings, this high-performance, multi-layer coating reduces average reflectance in the visible light range by more than 50 percent and improves light transmittance, to minimise the adverse effects of flare and ghost images even in demanding lighting conditions such as backlighting. This zoom lens also incorporates an Extra-low Dispersion (ED) glass element to effectively compensate for chromatic aberration for extra-clear, high-contrast images.

Zoom range covering the fish-eye angle

When mounted on a Pentax digital SLR camera body, this zoom lens provides a 180-degree diagonal angle of view in the APS-C format at a focal length of 10mm to deliver eye-catching fish-eye images. Since the angle of view shifts dramatically with a slight change of focal length, the photographer can easily create visual expressions typical of an ultra-wide-angle lens, such as exaggerated perspective, deformed subjects and a pan-focus effect to capture the entire image field in focus.

New exterior design to match latest digital SLR models

While retaining the overall size of the original SMC Pentax- DA 10-17mm F3.5-4.5 ED, this zoom lens features a totally new exterior design, similar to that of the latest DA- and D FA-series lenses. This new appearance also makes it a perfect partner for the newest K-series digital SLR models. Although it is an ultra-wide-angle zoom lens, it has been designed to be extremely compact and lightweight. The removeable lens hood allows for nearly circular fish-eye images to expand the range of photographic expressions, when mounted on a Pentazx K-1 or K-1 Mark II camera body.

SP Coating to repel stains

SP (Super Protect) Coating, highly repellent to water, grease and dirt, has been applied to the lens’s front surface using a Pentax-exclusive fluorine deposition process, making it easy to wipe off any stains such as fingerprints. This frees the photographer from worries in outdoor photography.

Other features:

• Quick-Shift Focus System, to provide instant shift to manual-focus operation after locking the subject in focus during AF operation by pressing the shutter-release button halfway down; usable at any time during AF operation
• A minimum focusing distance of 14 centimeters, allowing the photographer to move in as close as approximately 2.5 centimeters from the front end of the lens to the subject, for ultra-close-up photography

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• Ultra-wide-angle zoom
• Large, bright F2.8 aperture
• Suitable for landscapes, portrait, nightscapes, interior
• HD coating reduces chromatic aberration
• SDM (Supersonic Direct-drive Motor) fast, quiet AF
• Weather-resistant construction
• Nine blades to produce a smooth, beautiful bokeh

1. Exceptional imaging power 
When mounted on the PENTAX K-1 35mm full-frame digital SLR camera body, this zoom lens provides an ultra-wide-angle focal-length coverage from 15mm to 30mm. Its exaggerated perspective helps the photographer produce spectacular images in landscape photography. Since it provides a 30mm focal length at the telephoto end, it can also be used for such casual applications as snapshots.

2. State-of-the-art optical design 
This zoom lens incorporates three ED (Extra-low Dispersion) glass optical elements and three aspherical optical elements in its 18-element, 13-group optics, to deliver high-resolution images rich in contrast even at the edges of the image field, while effectively minimizing chromatic aberration, distortion and coma.

3. Large-aperture zoom lens, with a maximum aperture of F2.8 
Since this zoom lens provides a maximum aperture of F2.8 over its entire zoom range, it is versatile enough to be used for many different subjects and scenes, ranging from sweeping landscapes to nightscapes and starry skies. Despite its ultra-wide-angle perspective, it can capture the subject with an excellent bokeh (defocus) effect on the background. Even in macro photography from its minimum focusing distance of 28 centimeters, it can capture subjects with a well-defined sense of depth.

4. Built-in SDM (Supersonic Direct-drive Motor) 
The incorporation of a new-generation SDM (Supersonic Direct-drive Motor) assures that this zoom lens provides quiet, high-speed autofocus operation, letting the photographer react swiftly to all types of subjects.

5. Weather-resistant construction 
Special seals applied throughout the lens body provide this zoom lens with dependable weather-resistant construction, effectively preventing the intrusion of water into the lens interior. By pairing it with a weather-resistant PENTAX digital SLR camera body, the photographer has a durable, dependable digital imaging system that performs superbly under demanding shooting conditions – even in the rain or mist, or at locations prone to water splashes or spray.

6. HD Coating to improve image description 
The lens is treated with high-grade, multi-layer HD Coating.* Compared with conventional multi-layer coatings, this PENTAX-original coating assures higher light transmittance and less reflection to deliver bright, high-contrast images free of flare and ghost images, even under demanding lighting conditions such as backlight. * HD stands for High Definition.

7. Other features

• Quick-Shift Focus System for instant switching from autofocus to manual-focus operation, by holding the shutter-release button halfway down and turning the focus ring after the subject is captured in focus by the camera’s AF system.
• Rounded diaphragm with nine blades to produce a smooth, beautiful bokeh (defocus) effect, while minimising the streaking effect of point light sources.
• SP (Super Protect) Coating applied to the front surface of the lens to effectively repel water and grease.

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