The AF-S Nikkor 35mm F1.8G DX is Nikon's latest lens, announced in February for PMA 2009. Its introduction came as something of a surprise to many observers, not because it's an updated 35mm lens with a built-in autofocus motor, but because the 'DX' designation indicates that it's designed for use on DX format bodies, and isn't fully compatible with Nikon's growing FX format camera range. According to Nikon, this has allowed the company to design a lens that is smaller, lighter and cheaper than it would have been had it offered full coverage of the FX image circle. In effect, the lens is primarily targeted as an inexpensive, large aperture option for users of the entry-level (D40 / D40X /D60) series of DSLRs.
The 35mm focal length is roughly equivalent to 50mm on an FX camera, and the lens therefore fits into the 'standard' category, with an angle of view offering none of the 'perspective distortion' associated with wideangle or telephoto lenses. The fast F1.8 maximum aperture admits more than four times as much light as the AF-S 18-55mm F3.5-5.6G VR DX kit lens, which is useful for shooting in low light while keeping shutter speeds reasonably high. The 'Silent Wave Motor' allows autofocus on all of Nikon's DSLR bodies, with the added bonus of allowing the user to tweak focus manually in AF mode if desired.
The 35mm F1.8G features an optical design of 8 elements in 6 groups, including an aspherical element for the correction of aberrations usually associated with large aperture prime lenses. However unlike the typical 50mm standard prime for the full frame (FX) format, this lens's focal length is rather shorter than the flange distance from the lens mount to the imager. This necessitates the use of a so-called 'retrofocal' design, which is more usually associated with wideangle lenses; unfortunately this often results in increased aberrations relative to traditional near-symmetric 50mm designs. So how does the 35mm F1.8 DX measure up?
Headline features
- 35mm focal length; fast F1.8 maximum aperture
- Silent Wave Motor allows autofocusing on all Nikon DSLRs
- Full-time manual focus override
- For DX format cameras
Angle of view
The picture below illustrates the angle of view (click here for comparisons with the Nikon 50mm F1.4D):
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35mm (DX format) |
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Nikon AF-S Nikkor 35mm 1:1.8G DX specifications
| Street price | • $200 (US) |
|---|---|
| Date introduced | February 2009 |
| Maximum format size | DX |
| Focal length | 35mm |
| 35mm equivalent focal length | 52.5mm |
| Diagonal Angle of view | 47º |
| Maximum aperture | F1.8 |
| Minimum aperture | F22 |
| Lens Construction | • 8 elements/6 groups |
| Number of diaphragm blades | 7, rounded |
| Minimum focus | 0.3m (1.0 ft) |
| Maximum magnification | 0.16x |
| AF motor type | • Ring-type Silent Wave Motor (ultrasonic-type) • Full-time manual focus |
| Focus method | Internal (rear) focus |
| Image stabilization | • None |
| Filter thread | • 52mm • Does not rotate on focus |
| Supplied accessories | • Front and rear caps • HB-46 hood |
| Optional accessories | |
| Weight | 210g (7.4 oz) |
| Dimensions | 70mm diameter x 52.5mm length (2.8 x 2.1 in) |
| Lens Mount | Nikon F only |
* Supplied accessories may differ in each country or area
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