This lens is in excellent condition.
The Nikon AF Nikkor 20mm f/2.8 (non-D) is a highly compact, ultra-wide-angle prime lens produced from 1989 to 1994. It shares the exact same 12-element, 9-group optical formula as the manual-focus AI-s version that preceded it, making it a legendary choice for travel, landscapes, and architecture.
Key Specifications & Technical Data:
Focal Length: 20mm (provides a 94° ultra-wide field of view on full-frame FX cameras and 71° on DX crop-sensor bodies).
Aperture Range: f/2.8 maximum to f/22 minimum (7-bladed diaphragm).
Optical Design: 12 elements in 9 groups featuring Nikon's Super Integrated Coating (SIC).
Focusing System: Body-driven autofocus (screw-drive) featuring a Close-Range Correction (CRC) system.
Filter Size: 62mm front screw-on thread.
Dimensions & Weight: Incredibly lightweight at approximately 260g–270g and only about 42.5mm long.
