Nikon's tiny budget 50mm with a screwdriver AF coupling, a classic that has lasted decades.
The Nikon AF Nikkor 50mm f/1.8D was introduced in 2002, replacing the AF Nikkor 50mm f/1.8 (non-D) that had been in production since 1986. The D designation indicates distance encoding — the lens communicates focus distance data to the camera body for more accurate matrix metering and i-TTL flash calculations. Autofocus uses a screwdriver-type coupling to the camera body's AF drive motor rather than an internal motor; this single design choice determines which bodies can autofocus with the lens. At 155g it is among the smallest and lightest autofocus 50mm lenses available, representing exceptional value for its optical capability.
The optical design uses 6 elements in 5 groups. The 52mm filter thread is one of the most common sizes across the Nikon F system, making filter carry-over from kit lenses and other Nikon primes straightforward. A minimum focus distance of 0.45m suits portraiture and general-purpose distances but does not reach dedicated macro territory. Seven aperture blades produce acceptable out-of-focus rendering at mid-apertures. Wide open at f/1.8 there is visible softness and moderate chromatic aberration at high-contrast edges; the lens is sharp and contrasty from approximately f/2.8 onwards. Build is primarily plastic with a metal bayonet mount. There is no internal focus motor and no image stabilisation. The AF-S 50mm f/1.8G (2011) added a Silent Wave Motor, enabling autofocus on all Nikon F-mount DSLRs including entry-level bodies without a body-side AF motor.
As a standard prime the 50mm focal length provides a near-natural field of view on full-frame bodies, versatile for portraiture, documentary, and street photography. The f/1.8 aperture provides useful background separation and low-light capability. Image quality from f/2.8 to f/11 is strong and consistent. Screwdriver-coupling AF is reasonably fast on bodies with good AF drive motors such as the D7000-series and full-frame DSLRs. On older or slower bodies the motor can hunt. Manual focus is smooth and precise via the focus ring. Handling is comfortable given the very compact dimensions.
The most important practical consideration is AF compatibility: this lens will not autofocus on D3000-series, D5000-series, D40, or D60 bodies, which lack a body-side AF motor. It autofocuses on D7000-series, D500, D750, D780, D850, D610, D700, and all professional F-mount bodies. On compatible bodies it is outstanding value. Check aperture blades for oil contamination — common on older copies stored in warm conditions. If body compatibility is uncertain, the AF-S 50mm f/1.8G with its internal Silent Wave Motor works on all Nikon F-mount DSLRs.