HD PENTAX-DA 20-40mm F2.8-4 ED Limited DC WR

  • The first Limited Series zoom lens
  • In-lens DC auto focus operation for smooth & quiet performance
  • State of the Art HD (High Definition) Technology
  • PENTAX-original weather sealing

Enjoy the most advanced optical technology in a single lens with the HD PENTAX DA 20-40mm F2.8-4 ED Limited DC WR lens.  Enhancing the acclaimed Limited Series lenses, this APS-C optimized Limited zoom lens is the first to feature a versatile focal length of 20-40mm, ideal for a variety of subjects, settings and creative perspectives, all housed in a durable PENTAX weather sealed body with state-of-the-art HD coating. Complete as it is capable, its large F2.8 maximum aperture and rounded diaphragm blades produce stunning bokeh for exceptional visual expression, and its in-lens direct current (DC) focus motor provides quiet and smooth autofocus functionality. Upgrade your camera bag and your imaging experience with this a one-of-a-kind lens.

  • With its two-times zoom coverage from 20mm to 40mm, this lens offers focal length coverage from 30.5 to 61.5mm in the 35mm format when mounted on a PENTAX K-series DSLR, providing the most frequently used focal lengths for a variety of subjects settings and creative perspectives in a Limited Series lens.

  • This lens has been treated with the PENTAX-developed HD coating, a high grade, multi-layer coating that reduces reflectance in the visible light spectrum to less than 50 percent of that of conventional multi-layer coatings, allowing the user to capture crisp, high-contrast images free of flare and ghosting, even under demanding lighting conditions.

  • The first lens of the Limited Lens series to feature the PENTAX-original weather-resistant construction. With seven special seals to prevent intrusion of water, moisture and dust, depend on this lens in any shooting condition, rain or shine.

  • The PENTAX-original Quick-Shift Focus System allows instant switching from autofocus to manual focus operation.

  • The lens barrel, hood and cap are made of a high-grade aluminum material, and hand-machined for perfect proportions and beautiful texture. Positioned in the mid-section of the lens barrel, the zoom ring features a series of knurled grooves to facilitate zooming operation. Like all of the Limited Series lenses, this lens is available in a sleek silver or classic black.

  • Shoot discreetly with in-lens, direct current (DC) Auto Focus motor operation for smooth & quiet performance.

  • The ED (Extra-low Dispersion) glass and a super-low dispersion glass element in this lens’s optics deliver clear, high resolution imagery with edge-to-edge sharpness, throughout the entire zoom range.

  • Enhanced with a rounded diaphragm at a wide apertures for optimal optical performance and gorgeous bokeh effects.

  • The PENTAX-original SP (Super Protect) coating repels dust, water and grease to keep your lens clean and your image quality at its peak.



Angle Of View


Number Of Diaphragm Blades

Rounded aperture (20mm: F2.8-4 40mm: F4-5.6)

Minimum Focusing Distance

0.28m (0.9 ft.)

Maximum Magnification



Approx.283g /10.0 oz (with hood Approx.291g /10.3 oz)

Diaphragm Control

Fully automatic


HD coating, Super Protect (SP) coating, Quick-shift Focus System

Lens Construction

9 elements in 8 groups



Minimum Aperture






Focal Length

20-40mm, 30.5-61.5mm in 35mm format


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