Released September 2013

This ultra-lightweight, slim pancake lens features HD Coating and a circular aperture, weighing just 89g and measuring just 15mm in length. Mount: K-mount for APS-C format. Focal length: 40mm (equivalent to 61mm in 35mm format). Maximum aperture: f/2.8. Filter size: 30.5mm or 49mm. [HDDA4028 Limited BK] HDDA4028 Limited BK Released September 2013
This lens features our unique, high-performance multi-coating "HD Coating" for enhanced imaging performance. Compared to conventional multi-coatings, it offers lower reflections and higher transmittance, reducing ghosting and flare even in challenging lighting conditions such as backlighting, resulting in clear images.
A circular aperture for beautiful bokeh. The new circular aperture suppresses the appearance of streaks of light when photographing point light sources, enhancing the imaging performance unique to this limited-edition lens and achieving more natural and beautiful bokeh. Following the design concept of the "Limited Lens" and "Limited Lens" series, which emphasizes both image quality and texture, the lens not only undergoes numerical evaluation using test equipment, but also undergoes repeated evaluation of image quality using actual photographs, providing feedback to the design team to further refine the lens's unique character. Furthermore, the lens is optimized for digital imaging, delivering sharp, high-contrast, and clear images even at maximum aperture. The lens barrel, hood, and cap are made of high-quality machined aluminum, enhancing the lens's texture. The image circle is specifically designed for digital SLR cameras, specifically tailored to the image sensor size (23.5mm x 15.7mm). Compared to interchangeable lenses for 35mm SLR cameras with similar specifications, the lens offers significantly smaller size and lighter weight, resulting in superior cost performance. The lens's meticulous imaging characteristics—not only are high-resolution and low aberrations evaluated using various test equipment, but also incorporate advanced actual photographic evaluations—ensure high-contrast, clear, and three-dimensional images. Inheriting the concept of the PENTAX Limited Lens series, which pursues the "flavor of a lens," you can enjoy meticulous depiction in digital images.
Suitable for a variety of photography as an everyday lensWhen attached to a PENTAX APS-C size SLR camera, it provides an angle of view equivalent to a focal length of 61mm in 35mm format.With a bright maximum aperture of 2.8, it is suitable for a wide range of genres of photography, including snapshots, portraits, interiors, and landscapes.It allows for light and easy shooting that makes the most of mobility, making it the perfect everyday lens for those who carry a camera with them on a daily basis. ■ Specifications ■

Mount: PENTAX KAF mount Lens construction: 4 groups, 5 elements Angle of view (when mounted on a PENTAX digital SLR camera): 39° Focal length (35mm equivalent): 40mm (61mm equivalent) Maximum aperture: F2.8 Minimum aperture: F22 Number of aperture blades: 9 (F2.8 to F5.6: circular aperture) Minimum focusing distance: 0.4m Maximum magnification: 0.13x Filter diameter: 49mm or 30.5mm Maximum body diameter: Approx. 63mm Overall body length: Approx. 15mm Weight: Approx. 89g Accessories: Case/hood □ Manufacturer's warranty period 1 year