The HD PENTAX D FA* 70-200mm f/2.8 ED DC AW Lens is a telephoto zoom designed for Pentax K-mount DSLRs. Offering a 105-300mm-equivalent focal length range with APS-C cameras, this lens is particularly well-suited to sports, landscape, and wildlife uses, especially when working in trying light conditions. Extra-low dispersion glass elements have been incorporated within the optical design to minimize chromatic aberrations and distortions, as well as produce a high degree of sharpness from edge-to-edge. HD and Aero Bright coatings have also been applied to lens elements to reduce reflections and flare and a Super Protect coating also helps to shield the front and rear elements from dust, water, and oils. Further enabling its use in difficult conditions, this 70-200mm f/2.8 also features a weather-resistant construction with 13 separate seals to block moisture and dust from entering the lens.
Description
High-performance Star (★)-series lens with large F2.8 maximum aperture
This telephoto zoom lens has been developed as a new model of the high-performance Star (★) series, which assures exceptional image rendition with edge-to-edge sharpness by effectively compensating various aberrations to a minimum. It provides a zoom ratio of approximately 2.9 times to cover a telephoto range from 107mm to 307mm in the 35mm format. Since it provides a large maximum aperture of F2.8 over the entire zoom range, it is ideal for portraiture with beautifully defocused foreground/background and sports photography demanding high shutter speeds to freeze the action.
State-of-the-art optical technology
This zoom lens is treated with the newly developed Aero Bright Coating II — a lens-coating nanotechnology that employs a super-low refractive film fabrication process to assure light reflectance lower than that of the conventional Aero Bright Coating.*
Developed as an AW (All Weather) model, this zoom lens features a dependable dustproof, weather-resistant construction with 13 special seals to prevent the intrusion of water and dust particles into the lens interior.
In order to improve its operability, a three-position switch is newly installed on this lens, allowing instant switching among QFS/A, QFS/M and MF modes. QFS/A is an autofocus-priority mode, which allows the user to switch to manual-focusing operation only when autofocus operation is completed. QFS/M is a manual-focus-priority mode, which enables the user to switch to manual focusing at any time — even when the AF system is in operation. MF mode allows the user to instantly switch to manual focusing with a simple twist of the focus ring on the lens. With a choice of three distinctive modes, the user is assured of speedier, more accurate focusing operation for a given subject or application.
・Round-shaped diaphragm to produce a natural, beautiful bokeh (defocus) effect, while minimizing the streaking effect of point light sources
・Focus range limiter to minimize AF operation time by fixing the focus range to one of three sub-ranges
・SP (Super Protect) coating to keep the front surface free of dust and stains
・Detachable tripod mounting with a newly designed anti-falling mechanism
Specification
| Type | Telephoto Zoom |
|---|---|
| Focal length (Equivalent to 35mm format) | 70-200mm(107-307mm) |
| Maximum Aperture | F2.8 |
| Minimum Aperture | F22 |
| Angle of View | 23-8.1°(when attached to PENTAX digital SLR cameras) 34.5-12.5°(when attached to PENTAX 35mm SLR cameras) |
| Lens construction | 19 elements / 16 groups |
| No. of diaphragm blades | 9 Rounded aperture（F2.8-5.6） |
| Closest focusing distance | 1.2m (3.9 ft.) |
| Maximum reproduction ratio | 0.13x |
| Filter size | 77mm |
| Diameter x length | Approx.91.5mm x 203mm (3.6 in. x 8 in.) |
| Weight | Approx.1755g /61.9 oz. (with hood Approx.1835g /64.7 oz.) (with hood and tripod mount Approx.2030g/71.6 oz.) |
