DX Nikkor

Structure of the AF-S DX Nikkor 35 /1.8 G lens

Lens AF-S DX Nikkor 18-105mm f / 3.5-5.6G ED VR in different views

Lens AF-S DX zoom Nikkor 18–70 mm f / 3.5–4.5G IF-ED

Lens AF-S DX Zoom-Nikkor 12–24 mm f / 4G IF-ED , one of the DX lenses with aspherical lenses

Nikon D200 camera model with AF-S DX zoom Nikkor 12–24 mm 1: 4G IF-ED lens

DX-Nikkor is a type designation for lenses from the Japanese manufacturer Nikon . They have been specially developed for some in-house digital SLR cameras and have been adapted to the image sensors used in these cameras with an approximate size of 24 mm × 16 mm (manufacturer designation DX format ). They all have an F bayonet as a lens connection .

technical features

With the exception of the AF DX Fisheye Nikkor 10.5 mm f / 2.8G ED , all DX Nikkor lenses are also AF-S Nikkor lenses with an ultrasonic motor . They can therefore also be used in autofocus mode on other digital SLR cameras from the manufacturer that no longer have their own focusing motor.

The exact designation of the standard lens AF-S DX Zoom-Nikkor 18–70 mm 1: 3.5–4.5G IF-ED breaks down as follows:

AF-S - autofocus with ultrasonic motor (particularly fast and quiet)

DX - as described in this article

Zoom - see zoom lens

Nikkor - Brand name of Nikon lenses

18–70 mm - focal length range (wide angle to medium telephoto, corresponding to 27–105 mm for small pictures )

1: 3.5–4.5 - f-number , maximum light intensity at 18 or 70 mm

G - the aperture setting is made on the camera. The lens therefore no longer has an aperture ring.

IF - internal focusing , the length of the lens does not change when focusing

ED - Extra-low dispersion glass . Reduces chromatic aberration (color fringing)

Some newer lenses also contain the designation VR or VRII . These are lenses with an additional image stabilizer to avoid or reduce camera shake . Newer lenses sometimes also contain special lenses with “ nanocrystal coating”, which are supposed to suppress reflections between different lens elements almost completely. In the optical structure of some lenses there are aspherical lenses .

Demarcation

Due to the smaller image circle of the DX lenses, there are restrictions on 35mm cameras with full-format sensors , as there is strong vignetting in full-format sensor mode . For example, with the Nikon D3 this leads to a usable resolution of 5.1 megapixels (instead of 12.1 megapixels), with the Nikon D800 in crop mode (DX mode) a usable resolution of 15 megapixels (instead of 36.3 Megapixels).