Pentax SMC P-DA 16-45mm F4.0

    
The 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

   SPECIFICATIONS:

• Construction 13 elements in 10 groups (two aspherical elements)
• Angle of view 83o-35 o (with *istD body)
• F stop range Minimum F stop: 22
• Closest Focusing Distance 0.92 ft (0.28m)
• Maximum Magnification 0.26X
• Filter Size 67mm
• Dimensions (Length x Diameter) 2.8" x 3.6" (72 x 92mm)
• Weight 12.9 oz (365g) w/o hood