HD PENTAX-D FA 24-70mmF2.8ED SDM WR

A high-performance, interchangeable standard zoom lens for use with PENTAX K-mount digital SLR cameras, providing exceptional imaging power and a large F2.8 maximum aperture

This zoom lens with a universal focal length range of 24-70 mm is a perfect standard zoom lens and the perfect addition to the HD PENTAX-D FA 70-210mm F4 ED SDM WR and HD PENTAX-D FA* 70-200mm F2.8ED DC AW telephoto zoom lenses. It can also be used universally on cameras with APS-C sensors with a converted focal length of 37-107 mm. The maximum aperture of 2.8, various special lenses for optimal image quality and many other first-class features meet the highest standards – and are already aligned with the high technical requirements of future PENTAX cameras.

Exceptional imaging power

Consisting of 17 elements in 12 groups, the newly designed optics feature three ED (Extra-low Dispersion) optical elements, one anomalous-dispersion-glass aspherical optical element and three aspherical optical elements to accommodate super-high-resolution image sensors. By assuring sufficient light levels even at the edges of the image field and compensating various aberrations to a minimum, it provides a high MTF (Modulation Transfer Function) and delivers well-illustrated, fine-detailed images that are rich in contrast and resolution across the entire image field. When mounted on a current PENTAX K-series camera body, it uses only the central area of the image circle so that it delivers high-resolution images with uniform image description over the entire image field.

HD Coating to enhance imaging performance

The lens incorporates the PENTAX-developed, multi-layer HD (High Definition) Coating. Compared with conventional multi-layer coatings, it improves light transmittance while reducing average reflectance in the visible ray spectrum. This means that it can deliver clear, well-defined images with minimal flare and ghost images, even under demanding lighting conditions such as backlighting.

Large-aperture standard zoom lens

When mounted on a 35mm-format full-frame digital SLR camera body, this zoom lens offers a zoom ratio of approximately 2.9 times to cover the ultra-wide-angle to standard ranges (24mm to 70mm in focal length). It provides a maximum aperture of F2.8 over the entire zoom range to deliver brilliant images. It not only covers the focal-length range most frequently used for ordinary subjects, but also provides ultra-wide-angle coverage to produce distinctive visual expressions, such as exaggerated perspectives or extra-wide depths of field, making it very useful with subjects such as sweeping landscapes and shallow indoor scenes. When mounted on a current K-series digital SLR camera body, it provides focal lengths from 37mm to 107mm in the 35mm format to cover wide-angle to medium-telephoto ranges. Since its large maximum aperture not only creates an excellent bokeh (defocus) effect on the background for beautiful portraits, but also allows the photographer to handhold the camera for poorly illuminated subjects, such as sunsets and indoor scenes.

Supersonic AF motor (SDM)

Thanks to the incorporation of the PENTAX-original SDM autofocus system driven by a built-in supersonic motor, this zoom lens offers exceptionally smooth and quiet autofocus operation. When mounted on an SDM-compatible PENTAX K-mount lens-interchangeable digital camera body*, the focus mode is automatically switched to SDM-assisted autofocusing to ensure dependable, flawless AF operation.

 * This lens is compatible with the K-3 Mark III, K-3II, K-3, K-5 II, K-5 II s, K-30, K-01, K-5, K-r, K-7, K-x, K-m, K20D, K200D, K100D Super and K10D camera bodies (with Ver. 1.30 or later firmware installed).
When mounted on other camera bodies, the focus mode is automatically switched to manual.

Weather-resistant construction

This lens features a dependable weather-resistant construction with special seals to effectively prevent the intrusion of water into the lens interior. By pairing it with a weather-resistant PENTAX digital SLR camera body, it assures a durable, dependable digital imaging system that performs superbly in demanding shooting settings ? even in rain or mist, or in locations prone to water splashing or spray.

Other features

Quick-Shift Focus System
After focusing using the autofocus, the focus ring can be turned to allow immediate focus adjustment using the manual focus.
This feature enables smooth operability by eliminating the need for an AF/MF switching operation. This is useful during closeup photography, for instance, when you want to shoot while making fine adjustments to the focus

Lens Hood  included
In addition to a variety of features, such as our unique multi-coating and the prevention of reflections in the lens barrel, a large special lens hood is included with this PENTAX lens to minimise ghosting and flare that occurs in backlit and other adverse conditions. As such, the lens hood is an integral part of the optical system and should always be used when using the lens. Most PENTAX lenses are designed so that the lens tip does not rotate when zooming and focusing to facilitate the use of circular polarising filters. This is further supported by a small window in the lower part of the aperture to allow the circular polarising filter to be operated.

PENTAX K Mount

The lens mounts for PENTAX interchangeable lenses are based on the bayonet K mount, which has remained unchanged since its inception in 1975. It is a mount unique to PENTAX that features a large aperture combined with superior ease of replacement, accuracy, and toughness. These features are utilized to comfortably incorporate an iris control mechanism, autofocus mechanism, and other functions for enabling nearly complete compatibility with conventional lenses. The PENTAX K Mount keeps its advanced versatility despite differences in camera and lens functions.

Rounded diaphragm to produce a smooth, beautiful bokeh (defocus) effect, while minimizing the streaking effect of point light sources.

Zoom lock lever to prevent the accidental extension of the lens barrel when pointed downwards. 

【MTF Chart】

Geometric optics MTF
(MTF calculated without referencing the effects of light diffraction phenomenon)

Wave optical MTF
(MTF calculated referencing the effects of light diffraction phenomenon)

SAMPLE IMAGES

Aperture F6.3, Shutter speed 1/320sec, Focal length 24.0mm   Photo by Yoshiaki Kobayashi

Aperture F5.6, Shutter speed 1/640sec, Focal length 70.0mm   Photo by Yoshiaki Kobayashi

Aperture F8.0, Shutter speed 1sec, Focal length 29.0mm   Photo by Yoshiaki Kobayashi444

Aperture F9.0, Shutter speed 1/60sec, Focal length 24.0mm   Photo by Yoshiaki Kobayashi

Aperture F5.6, Shutter speed 1/200sec, Focal length 24.0mm   Photo by Yoshiaki Kobayashi