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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.
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 |
Maximum Reproduction Ratio | 1:4.76 |
Elements/Groups | 15 / 12 |
Diaphragm Blades | 9 |
Фокусное расстояние, мм | 16-50 |
Совместим с камерами | Pentax |
Фосусное расстояние | Зумм |
Тип обьектива | широкоугольный |
Байонет | Pentax K |