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Review by Markus Stamm, published March 2013
Introduction
The segment of ultra fast primes has not seen much attention from Nikon for many years. Once famous for lenses like the Noct Nikkor 58/1.2, the fast options available with AF drive were rather limited and, with the exception of the AF-S 50/1.4, either a little dated or even discontinued like the AF-D 28/1.4.
In 2010 Nikon finally adressed this gap and introduced 3 new or updated ultra fast Nikkor primes, the shortest (and probably most unexpected) one being the AF-S 24mm f/1.4. Regarding its street price of 1800 EUR as of the time of this review it's obviously not targeted at the consumer market.
In this review, we'll have a look at how the lens performs on our current DX test camera, the Nikon D7000, where it is the equivalent of roughly a 35/2 lens.
The AF-S 24/1.4 is cleary designed with the professional photographer in mind, featuring a very solid construction mostly made of metal (including magnesium alloy parts) as well as dust and weather sealing. The rubberized focus ring is nicely damped and operates smoothly.
The AF-S 24 has a rear focus group so its length remains constant regardless of the focus setting and the front element does not rotate. Using a polarizer is therefore no problem.
Optically the lens features a rather complex construction including ED and aspherical elements as well as Nikon's Nano Crystal Coat, which helps to reduce flare and ghosting in backlight conditions.
The lens features a Silent Wave ultrasonic drive, which makes it compatible with all Nikon DSLRs, including the entry-level DX cameras. The AF-S allows for a near-silent autofocus and manual override at any time. The AF speed is not overly fast and certainly slower than the high end f/2.8 professional zooms. However, for typical usage, even press work, the AF is certainly fast enough in the field.
The AF-S 24 is a G-type lens and thus does not offer an aperture ring.
| Specifications |
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| Equiv. focal length | 36 mm (full format equivalent) |
| Equiv. aperture | f/2.1 (full format equivalent, in terms of depth-of-field) |
| Optical construction | 12 elements in 10 groups including 2 ED elements, 2 aspherical elements and Nano Crystal Coat |
| Number of aperture blades | 9 (rounded) |
| min. focus distance | 0.25 m (max. magnification ratio 1:5.6) |
| Dimensions | 83 x 88.5 mm |
| Weight | 620 g |
| Filter size | 77 mm (non-rotating) |
| Hood | Nikon HB-51, petal-shaped (bayonet mount, supplied) |
| Other features | Lens provides distance (D) information to the camera, Silent Wave AF motor, dust and weather sealing |
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