Product Description

The smc PENTAX-DA 16-50mm f/2.8 ED AL[IF]SDM wide angle zoom lens delivers the highest level of optical quality and includes SDM technology for fast, accurate, quiet focus. Bringing together advanced optical technologies, including aspherical elements, special optical-glass elements and original lens coatings, these new interchangeable lenses are superior to any existing lens series in terms of contrast, clarity and edge-to-edge sharpness.

Product Details

• Brand: Pentax
• Model: 21660
• Released on: 2007-08-15
• Dimensions: 3.00" h x 3.00" w x 5.40" l, 1.51 pounds

Features

• 50-135mm telephoto zoom lens with F/2.8 maximum aperture for Pentax digital SLR cameras
• Aspherical elements, special optical-glass elements, and original glass coatings
• Tightly sealed weather- and dust-resistant housing stands up to rainy or dusty conditions
• SDM system produces smooth, quiet autofocusing; SP coating protects exposed lens elements
• Measures 3 inches in diameter and 5.4 inches long; weighs 24.2 ounces without hood

Amazon.com Product Description
Designed for exclusive use with Pentax digital SLR cameras, the Pentax DA series 50-135mm telephoto zoom lens makes it easy to capture close-in sports shots or intimate wildlife photography. The lens is distinguished by its aspherical elements, special optical-glass elements, and original glass coatings, which help produce a high contrast, unmatched clarity, and edge-to-edge sharpness. The lens also boasts a tightly sealed weather- and dust-resistant housing that stands up to rainy or dusty conditions. And users will love the new SDM system, which produces smoother, quieter autofocusing using a built-in supersonic motor. Other details include a Pentax-original Quick-Shift Focus System that switches instantly to manual-focus operation, a Pentax SP coating that protects the exposed lens elements, and a focal length equivalent to 76.5-207mm in the 35mm format.

• Lens mount: Pentax KAF2
• Lens construction: 18 elements in 14 groups
• Angle of view: 31.5 to 11.9 degrees (when used with Pentax digital SLR camera body)
• Aperture control: Automatic
• Minimum aperture: F22
• Metering system: TTL open-aperture metering
• Minimum focusing distance: 1 meter
• Filter size: 67mm
• Maximum magnification: 0.17x
• Dimensions: 3 inches in diameter and 5.4 inches long
• Weight: 24.2 ounces (without hood)

Customer Reviews

A great addition to the stable!
The * designation of this lens is well deserved. Pentax has produced a lens that in combination with the K20D body produces superior color/tonal balance and superior sharpness characteristics. It has a solid feel, good finish, ultra quiet focusing mechanism and a firm zoom control. Also, the constant max f/2.8 aperture makes this a fast lens that allows for great low light performance, as well as excellent bokeh characteristics. And if you are looking to make a eye-popping impression on your fellow photo peers, this lens w/hood on a K10 or K20D screams "this guy knows his gear"!!

While higher in price than conventional Pentax lenses, this lens is a tremendous value compared to the premium lenses by Canon and Nikon.

By the way, great service from Amazon! This is the place to buy photo gear once you know what you want!

Great lens
I love this lens. It is fast, sharp, and has an extremely rugged build. It is definitely a large, heavy lens compared to the DA 50-200MM, for example. On the other hand, the weather sealing is evident, the focusing ring is large, and all lens motion is internal. The SDM is quiet (though not quite a silent as the DA* 16-50mm) and silky smooth. Overall this lens is well worth the investment.

Great lens
this lens is outstanding ...build quality is amazing as well as picture sharpness...have it mounted on my pentax k10d
im using this lens for outside glamour and portrait photography