Pentax smc DA* 16-50mm f/2.8 ED AL (IF) SDM Lens

A versatile standard zoom characterized by its bright f/2.8 constant maximum aperture, the smc DA* 16-50mm f/2.8 ED AL (IF) SDM Lens offers a 24-75mm equivalent focal length range and is compatible with Pentax APS-C-format DSLRs. The optical design incorporates a pair of aspherical elements and three extra-low dispersion elements to control chromatic aberrations and distortions throughout the zoom range and contribute to a high-degree of sharpness and clarity. A Super Multi-Coating has also been applied to reduce lens flare and ghosting for increased contrast and color neutrality.

Complementing the optical assets, this lens also features a Supersonic Drive Motor (SDM) to provide smooth, quiet autofocus performance and the Quick-Shift Focus System permits instant switching from AF to manual for fine-tuned focus control. Additionally, an internal focusing design maintains the overall lens length during operation and quickens focusing speeds. Benefitting working in a variety of climates, the lens also sports a weather- and dust-resistant construction as well as a Super Protect (SP) coating to repel dust, dirt, moisture, and grease from the front and rear elements.

• Standard zoom 16-50mm lens is designed for APS-C-format Pentax K mount DSLRs where it provides a 24-75mm equivalent focal length range.

• A bright constant f/2.8 maximum aperture benefits working in difficult lighting conditions and also offers increased control over depth of field.

• Two aspherical elements and three extra-low dispersion elements minimize chromatic and spherical aberrations, as well as distortion, throughout the zoom range to produce clean, clear image quality with enhanced sharpness and detail.

• A Super Multi-Coating has been applied to control lens flare and ghosting for improved contrast and color accuracy.

• Supersonic Drive Motor provides quick, quiet, and smooth autofocus performance to benefit both stills shooting and video recording.

• A Quick-Shift Focus System allows instant switching from autofocus to manual focus for quickly refining your focus position.

• Inner focusing design maintains the overall length of the lens during operations and also contributes to faster, more responsive AF performance.

• A nine-blade diaphragm helps to produce a pleasing bokeh quality when working with selective focus and shallow depth of field techniques.

• Dust- and weather-resistant construction better enables working in harsh climates. Additionally, a Super Protect coating also protects the front and rear elements against dust, moisture, and smudging.

Performance
Focal Length	16 - 50mm Comparable Focal Length: 24 - 75 mm
Aperture	Maximum: f/2.8 Minimum: f/22
Camera Mount Type	Pentax K
Format Compatibility	APS-C
Angle of View	83° - 31.5°
Minimum Focus Distance	11.9" (30.23 cm)
Magnification	0.21x
Elements/Groups	15 / 12
Diaphragm Blades	9

Features
Autofocus	Yes

Physical
Filter Thread	Front: 77 mm
Dimensions (DxL)	Approx. 3.31 x 3.88" (84 x 98.5 mm)
Weight	1.24 lb (562 g)