Nikon AF 20mm f/2.8D Lens

The Nikon AF 20mm f/2.8D is a compact and lightweight ultra-wide-angle lens. The Nikon AF 20 features close-range correction (CRC) for distortion-free pictures as close as 0.85 feet.

The Nikon AF 20mm f/2.8D Lens has superb optical design for architecture, wedding and landscape photography. The Nikon AF 20 also features 94° picture coverage with edge-to-edge sharpness.

Lens-making is an art--Nikon artisans craft Nikkor optics from the finest materials, taking pride in adding their intellect and technique to bring the world's finest lenses to life. They push the leading edge of lens-making in their effort to provide the "glass" that makes the world's greatest pictures.

AF Nikkor lenses work with Nikon SLRs for optimal performance, even the very latest. The Nikon AF 20mm f/2.8D is a compact ultra-wide-angle lens constructed with superb optical design for architecture, wedding and landscape photography. The Nikon AF 20 features 94-degree (70-degree with Nikon DX format) picture coverage with edge-to-edge sharpness. The Close Range Correction (CRC) system provides high performance at both near and far focusing distances, for distortion-free pictures as close as 0.85 feet.

To enhance the performance of its optical lens elements, Nikon employs an exclusive multilayer lens coating that helps reduce ghost and flare to a negligible level. Nikon Super Integrated Coating achieves a number of objectives, including minimized reflection in the wider wavelength range and superior color balance and reproduction. Nikon Super Integrated Coating is especially effective for lenses with a large number of elements, like our Zoom-Nikkors. Also, Nikon's multilayer coating process is tailored to the design of each particular lens. The number of coatings applied to each lens element is carefully calculated to match the lens type and glass used, and also to assure the uniform color balance that characterizes Nikkor lenses. This results in lenses that meet much higher standards than the rest of the industry.

The Close-Range Correction (CRC) system is one of Nikon's most important focusing innovations, for it provides superior picture quality at close focusing distances and increases the focusing range. With CRC, the lens elements are configured in a "floating element" design wherein each lens group moves independently to achieve focusing. This ensures superior lens performance even when shooting at close distances.

D-type and G-type Nikkors relay subject-to-camera distance information to AF Nikon camera bodies. This then makes possible advances like 3D Matrix Metering and 3D Multi-Sensor Balanced Fill-Flash. Note: D-type and G-type Nikkors provide distance information to the following cameras: Auto exposure; F6, F5, F100, F90X, F80, F75, F70, F65, F60, F55, F50, Pronea S, Pronea 600i, D2 series, D1 series, D100 and D70s/D70. Flash control; F6, F5, F100, F90X, F80, F75, F70, D2 series, D1 series, D100, and D70s/D70 cameras.

Nikon AF 20mm f/2.8D Lens details:

Lens construction: 12 elements in 9 groups
 
Picture angle: 94° [70° with Nikon digital cameras (Nikon DX format)]
 
Number of diaphragm blades: 7
 
Minimum f/stop: 22
 
Closest focusing distance: 0.25m
 
Maximum reproduction ratio: 1/8.3
 
Macro focusing: N/A
 
Focus-limit switch: N/A
 
M/A mode: N/A
 
Focus lock button: N/A
 
Weight (approx.): 270g
 
Dimensions (approx.) (from the camera’s lens mounting flange): 69×42.5 mm
 
Lens cap: Snap-on
 
Lens hood: HB-4 (optional)
 
Lens case: CL-30S (optional)
 
Tripod collar: N/A
 
External front filter attachment frame: Does not rotate
 
External front filter: 62mm
 
Slip-on filter: N/A
 
Built-in/rear filter: N/A
 
Circular polarizing filter: N/A
 
Circular polarizing filter II: N/A
 
AF-3: Usable, but vignetting may occur at ∞ (infinity) and macro settings. (0)
 
AF-4: Usable. (0): ( ) Indicates maximum number of usable hoods (HN-36 for AF-3/HN-37 for AF-4).
 
Infrared compensation scale: Does have
 
Supplied accessories: 62mm Snap-on front lens cap, Rear lens cap LF-1
 
Aperture ring: Does have 
 
Distance scale: Does have
 
Material of bayonet ring: Metal