Pentax 16-45mm f/4.0 SMC PDA ED AL Lens

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True-to-Life Image Reproduction
and Overall Size Reduction

Pentax 16-45mm f/4.0 SMC PDA ED AL Wide Angle Zoom LensThe compact, high-performance, interchangeable smc PENTAX-DA 16mm-45mm F4 ED AL lens features a 3X zoom ratio with focal lengths covering ultra-wide to moderate-telephoto ranges for the angle of view equivalent to 24.5mm-69mm in the35mm format.

The DA-Series features a responsive "Quick-Shift Focus System" that allows photographers to instantly switch the focus mode from auto to manual with a slight twist of the focus ring. Coupled with a simple, functional design and the elimination of an aperture ring, this new mechanism considerably improves the camera's operability. The lens also incorporates an Extra-low Dispersion (ED) glass lens element and two aspherical lens elements for true-to-life image reproduction and overall size reduction.

The image circle in DA-series lenses, including the smc PENTAX-DA 16mm-45mm F4 ED AL, is designed to perfectly match the 23.5mm x 15.7mm size of the CCD used in PENTAX digital SLRs to optimize camera performance. The new design also contributes to a drastic reduction in size, weight and production cost, compared to 35mm-format counterparts with similar specifications.


Pentax's DA series feature a "Quick-Shift Focus System" which allows an instant switch from autofocus to manual focus with a slight twist of the focus ring. Coupled with simple, functional design, and the elimination of the aperture ring, the camera's operability is significantly improved.

The image circle in DA-series lenses is designed to perfectly match the 23.5 x 15.7mm size of the CCD image sensor used in Pentax digital SLRs, and thus will not cover the full frame of a 35mm camera. The design contributes to dramatic size and weight reduction, not to mention production costs.

Note! Not recommended for 35mm film or "full-frame" digital SLR cameras

    Equivalent to a 24-67mm lens in 35mm format
    Two aspherical lens elements and one element of ED glass

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Lens styleZoom lens  
Max Format Size APS-C / DX  
Lens focal length16 45 mm  
Stabilization type No  
Camera mount Pentax KAF  
Angle of view 83-35 with the *istD camera  
Aperture (lens diaphragm)
Largest aperture opening F4.0  
Smallest aperture opening F22.0  
Includes aperture ring No  
Total diaphragm blades 6  
Total Elements 13  
Number of Groups 10  
Coatings / special elements 1 ED glass element 2 aspherical elements  
Minimum focus distance 0.28 m (11.02")  
Maximum magnification ratio 0.25 x  
Autofocus type Yes  
Lens motor Screw drive from camera  
Full time manual focus Yes  
Focusing method Extending front  
Lens distance scale Yes  
Depth of field scale Yes  
Physical features
Overall weight356 g (0.78 lb)  
Lens diameter 72 mm (2.83")  
Overall length 92 mm (3.62")  
Lens color Black  
Zooming method Rotary (extending)  
Filter thread size 67 mm  
Lens hood included Yes  
Lens hood code PH-RBL Petal type  
Tripod collar included No

Lens Includes
Pentax SMCP-DA 16-45mm f/4.0 ED AL Autofocus Lens for Digital Camera
Front & Rear Lenscaps
Lens Hood
1-Year Warranty


Pentax 16-45mm f/4.0 SMC PDA ED AL Wide Angle Zoom Lens


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