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Model: PEN7020028DFABrand: PentaxZoom Lens (Tele-Long Tele): 70-200mmAperture: F2.8Lens Mount Fitting: Pentax K FALens Construction: 19 elements in 16 groupsAperture Blades: 9 (rounded)Filter Thread Size: 77mmFocal Length (35mm Equivalent): 107-307mm
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Designed for use with PENTAX K-mount digital SLR cameras, this large-aperture telephoto zoom lens is a new addition to the high-performance Star (*) series developed for the highest level of image rendition.
This telephoto zoom lens has been developed as a new model of the PENTAX Star (*) series, which boasts the highest image quality of all PENTAX interchangeable lenses by compensating various aberrations to a minimum. Thanks to its large-aperture design, it provides a large maximum aperture of F2.8 at all focal lengths from 70mm to 200mm. Coupled with other PENTAX-original lens-coating technologies - such as the newly developed Aero Bright Coating II assuring exceptionally low reflectance, and the high-grade HD Coating - it produces extra-sharp, high-contrast images free of flare and ghost images, even under demanding lighting conditions such as in backlight. In addition to four super-low dispersion glass elements and two ED (Extra-low Dispersion) glass elements, its optics includes a pair of new Super ED glass elements to effectively compensate chromatic aberration over the entire zoom range and deliver crisp, high-resolution images with edge-to-edge sharpness. Its dustproof, weather-resistant body also makes it extremely dependable and durable in demanding outdoor conditions.