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Press Release

First Nikon DX lens – features and availability confirmed

Tuesday February 18, 2003

12-24mm DX lens

First Nikon DX lens – features and availability confirmed

Nikon have confirmed the specification and availability of the AF-S DX Zoom-Nikkor 12-24mm f/4G IF-ED announced in December last year.

This first DX lens features ultra-wide angle optics designed for the 23.7 x 15.6 mm ‘DX’ sensor format used in the Nikon ‘D series’ SLR camera range: D100, D1X, D1H and D1.

Delivering superb image quality from edge to edge the ultra-wide angle zoom lens offers a 135 format picture angle equivalent of an 18-35mm lens in a compact and lightweight construction.

The new DX Nikkor features Extra low Dispersion (ED) glass for high resolution, low aberration performance and a Silent Wave Motor (SWM) for crisp, quiet auto focus for wide-angle digital photography without compromise.
The lens will be available in April with the rrp of £899.99

Major Features:
12-24mm ultra-wide angle G type* zoom lens equivalent to a 135 format 18-36mm.
ED (Extra low Dispersion) glass elements minimize chromatic aberration to provide higher resolution and superior contrast
Three aspherical lens elements minimize distortion especially at the periphery for superior optical performance
Nikon’s exclusive SWM for swift auto focusing with superior accuracy and ultr-quiet operation
High grade Nikon Super Integrated Coating (SIC) offers superior colour reproduction and minimizes ghost and flare
7 bladed rounded diaphragm blades for natural out of focus highlights
M/A mode allows rapid switching to Manual focus even during AF servo operation with virtually no time lag
Internal focusing (IF) for smoother focusing and body balance
Lightweight and compact design that fits comfortably on compact digital SLR bodies such as the D100
Flower shaped hood (HB-23) provided to reduce stray light
Modern cosmetic design that matches current AF-S Nikkor lenses
Optional protective lens case CL-S2 available


Specifications

Focal length: 12-24mm (18-36mm equiv. with D100, D1 series)
Zoom ratio: 2x
Maximum aperture: f/4 (all focal lengths)
Aperture range: f/4 to f/22
Lens construction: 11 elements in 7 groups
ED glass elements: 2
Aspherical elements: 3
Environmentally friendly glass: Yes
Diaphragm blades (rounded): 7
Picture angle: 99° - 61° (with D100/ D1 series)
Focus distance: 0.3m to infinity
Focus method: IF (Internal Focus)
Max. reproduction ratio: 1 / 8.3
Attachment size: 77mm (fixed)
Hood: HB-23 bayonet (included)
Dimensions (mm): Ø82.5 x 90
Weight: 485g


The lens is fully compatible with the Nikon D1-series and D100 cameras - we do not recommend use of DX Nikkor with 35mm (135) format cameras.


Nikon’s DX sensor

Nikon believe that the DX sensor format offers the best performance to cost ratio and has other advantages over other formats.
Since the D1, Nikon has employed a 23.7 x 15.6mm size image sensor in its digital SLRs. It was designed specifically for Nikon digital SLR cameras, and provides a wide dynamic range which makes it easier for the camera to process captured images. At present, this size image sensor features extremely well-balanced performance that is not possible with sensors of other sizes.

However, when a 35mm (135) format lens is used with a Nikon digital SLR, the picture angle is approximately 1.5 times the focal length of the lens (35mm [135] format equivalent). This characteristic proved to be advantageous when producing super-telephoto lenses (e.g. 600mm becomes 900mm) and fast telephoto lenses (e.g. 400mm f/2.8 becomes 600mm f/2.8). In the case of ultra-wideangle lenses (e.g. 14mm becomes 21mm), though, it turned out to be a liability as it became difficult to produce truly compact lenses.

To resolve this problem, Nikon has adopted a new lens design specifically for Nikon digital SLRs, featuring a smaller image circle. The combination of reduced picture angle and smaller lens diameter have made possible compact body design and high cost-performance for ultra-wideangle lenses.

By employing the DX sensor, Nikon can produce digital SLRs capable of higher speeds, with wider resolution and faster workflow options, and at affordable price points.




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