Pentax DA 40mm f/2.8 Ultra Compact Wide Angle Lens

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Portability and Storage Convenience

Pentax DA 40mm f/2.8 Ultra Compact Wide Angle LensDesigned for exclusive use with PENTAX digital SLR cameras, the unique pancake style standard lens measures a mere .59 inches in length and weighs just 3.17 ounces. Combined with the popular PENTAX *ist DS digital SLR, the PENTAX DA 40mm F2.8 Limited lens will offer the smallest and lightest digital SLR combination available from any manufacturer.

As part of the PENTAX Limited Series, the lens will offer exceptional image quality and construction, high contrast, high resolution, and minimal aberrations. Also compatible with the *ist D digital SLR, this ultra thin lens will offer overall maneuverability during shooting as well as portability and storage convenience. This everyday standard lens will provide outstanding performance in a range of applications including snapshots, portraiture, indoor shooting and landscape photography.

Featuring a sophisticated appearance that incorporates an aluminum lens barrel, hood and cap, the lens offers a perspective similar to the naked eye with its 40mm focal length (equivalent to 61mm in the 35mm format), a large maximum aperture of F2.8, and a minimum focusing distance of 40 centimeters.

The PENTAX DA 40mm also features the PENTAX Quick Shift Focus System for instant switching to manual focus operation, a nine blade diaphragm to assure true-to-life reproduction of out-of-focus areas, and filter attachment versatility (a 49mm-size filter on the lens or a 30.5mm-size filter on the lens hood). 


    The Pentax SMC P-DA 40mm f/2.8 Limited lens is designed to be used specifically with digital SLR cameras. The focal length is equivalent to 60mm in 35mm format. It's ultra-compact "pancake-type" design makes it possible to make a lens that only weighs 3.2 ounces.

    Like all Pentax lenses, this lens is treated with SMC coating for maximum light transmission, sharp definition, and high contrast images. The advanced optical design used for this lens provides exceptionally high resolution optics with minimal aberrations.

Note! Not suitable for 35mm film SLR or full frame DSLR cameras.

    DA series is specifically designed for digital cameras

    Ultra-compact, ultra-light weight "pancake" design

    Quick-Shift Focus System allows for instant shift from AF to manual focus

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Lens stylePrime lens  
Max Format Size APS-C / DX  
Lens focal length40 mm  
Stabilization type No  
Camera mount Pentax KAF  
Angle of view 39  
Largest aperture opening F2.8  
Smallest aperture opening F22.0  
Includes aperture ring No  
Total diaphragm blades 9  
Total Elements 5  
Number of Groups 4  
Minimum focus distance 0.40 m (15.75")  
Maximum magnification ratio 0.13 x  
Autofocus type Yes  
Lens motor Screw drive from camera  
Full time manual focus Yes  
Overall weight90 g (0.20 lb) 3.2 oz  
Lens diameter 63 mm (2.48")  
Overall length 15 mm (0.59")  
Color Black  
Filter thread size 49 mm  
Lens hood included Yes  
Tripod collar included No

Lens Includes
Lens Hood MH-RC 49mm (38742)
DA 40mm Lens Cap 49mm (31493)
DA 40mm Lens Soft Case (33944)


Pentax DA 40mm f/2.8 Ultra Compact Wide Angle Lens

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