Skip to sections.
Feb. 15, 1999
Nikon Corporation will release
the AF-S Zoom-Nikkor 28-70mm f/2.8D IF-ED, an AF SLR camera lens with a built-in Silent Wave Motor (SWM) for AF operation that enhances high-speed, high-precision AF performance and high-quality optical performance.
Features
High-speed, high-precision AF performance and high-quality optical performance
Nikon's exclusive Silent Wave Motor (SWM) provides quick response, as well as high-precision AF photography with hushed mechanical sound.
Advanced Focus Tracking enables fast-moving subjects, such as athletes in sporting events, to be photographed clearly.
A newly designed optical system allows superior optical performance and utilizes two ED (Extra-low Dispersion) glasses. An aspherical lens of molded glass minimizes distortion and results in higher resolution and superior contrast.
The rounded diaphragm opening (9 blades) makes out-of-focus images appear more natural.
Nikon's exclusive IF (Internal Focusing) ensures a closer focusing distance (0.5m throughout zoom range)
Easy operation suitable for many occasions
The M / A mode allows switching from autofocus to manual focus with virtually no time lag, even during AF servo operation
No power is consumed during manual focus operation
The filter attachment does not rotate during focusing or zooming
Specifications
| Type of lens | D-type AF Zoom-Nikkor lens having built-in CPU and Nikon bayonet mount |
|---|---|
| Focal length | 28 - 70mm |
| Maximum aperture | f / 2.8 |
| Lens construction | 15 elements in 11 groups (1 PGM aspherical and 2 ED lens elements) |
| Picture angle | 74 - 34° 20' (63 - 27° 40' with IX240 system camera) |
| Focal length scale | 28, 35, 50, 70mm |
| Shooting distance scale | Graduated in meters and feets from 0.7 m (2.5 ft.) to infinity |
| Distance information | Output to camere body |
| Aperture scale | 2.8, 4, 5.6, 8, 11, 16, 22 (on both standard and aperture-direct-readout scales) |
| Minimum aperture lock | Provided |
| Diaphragm | Fully automatic |
| Exposure measurement | Via full-aperture method with AI cameras or camera with CPU interface cameras |
| Focusing | Nikon Internal Focusing (IF) system (utilizing an internal Silent Wave Motor) ; Autofocus with manual overide or manually via separate focus ring |
| Zooming | Manually via separete zoom ring |
| Hood | Bayonet hood HB-19 |
| Attachiment size | 77mm (P = 0.75mm) |
| Dimensions and Weight (approx.) | 88.5 dia. × 121.5 mm extention from the camera's lens mounting flange (at min. length) ; overall length 130 mm ; 935 g (33 oz.) |
