Released October 2015

A large-aperture standard zoom lens with an F2.8 maximum aperture across the entire zoom range, from ultra-wide-angle (24-70mm) to standard (standard). Mount: K-mount, full-frame compatible. Focal length: 24-70mm. Maximum aperture: F2.8. Filter diameter: 82mm. [HDDFA2470F28] HDDFA2470F28 Released October 2015
Superior image quality: Compatible with high-resolution image sensors, the new optical system is comprised of 17 elements in 12 groups, including three extra-low dispersion (ED) glass elements, one anomalous dispersion glass aspherical lens, and three aspherical lenses. While ensuring sufficient peripheral illumination, the lens achieves high MTF by minimizing aberrations, enabling precise depiction with enhanced contrast and resolution from center to periphery. Furthermore, when mounted on a current PENTAX K-series digital SLR camera, only the center of the image circle is used, allowing for more consistent, high-resolution imaging across the entire frame.
Large-aperture standard zoom lens: When mounted on a 35mm full-frame digital SLR camera, this standard zoom lens offers approximately 2.9x magnification, covering focal lengths from 24-70mm, from ultra-wide to standard. With a bright maximum aperture of f/2.8 throughout the zoom range, this is the most frequently used focal range for general photography. It also offers the distinctive effects of wide-angle photography, such as enhanced perspective and deep depth of field, making it suitable for expansive landscapes and narrow indoor scenes. When mounted on a PENTAX K-series digital SLR camera, the lens provides a focal length equivalent to 37-107mm in 35mm format, making it suitable for use as a wide-angle to medium-telephoto lens, making it ideal for portraits that take advantage of the background blur characteristic of a large-aperture lens, as well as for handheld shooting in low-light conditions such as at dusk or indoors.
Equipped with an In-Lens Ultrasonic Motor (SDM). The new ultrasonic motor (SDM) built into the lens delivers fast, quiet autofocus for comfortable operation.
Moisture-Resistant Construction: The entire lens is sealed to prevent water from getting inside the lens. Pairing it with a PENTAX digital SLR camera body with a moisture-resistant construction improves reliability and durability even in rainy, foggy, or splashing conditions.
Enhances Image Quality: The lens features our unique, high-performance multi-coating, HD Coating. Compared to conventional multi-coatings, it offers lower reflections and higher transmittance, reducing ghosting and flare even under challenging lighting conditions, such as backlighting, for clear, high-contrast images.
The Quick-Shift Focus System allows instant manual focusing even while focusing in autofocus mode, eliminating the need for a switch or other switching operations.
Uses a circular aperture to suppress light beams when photographing point light sources and create a soft, circular blur.
Uses a zoom lock lever mechanism to prevent the lens barrel from falling due to its own weight. [Accessories] - Hood - Lens cap - Lens mount cap - Lens case ■ Specifications ■

Focal Length: 24-70mm Focal Length (when mounted on an APS-C size SLR camera): 24-70mm Focal Length (35mm equivalent): 37-107mm Maximum Aperture: F2.8 Minimum Aperture: F22 Lens Construction: 12 groups, 17 elements Angle of View: 61°-23° (when mounted on a PENTAX digital SLR camera) 84°-34.5° (When mounted on a PENTAX 35mm SLR camera) Mount: KAF3 Minimum focusing distance: 0.38m Maximum magnification: 0.20x Filter diameter: 82mm Light intensity control method: Fully automatic iris Number of iris blades: 9 (circular iris: F2.8-5.6) Maximum diameter x length: approx. 88.5mm x approx. 109.5mm Weight: approx. 787g (with hood: approx. 812g) Manufacturer's warranty period: 1 year