Nikon 28mm f/2.8 [AI]
Check availablity: eBay.
It uses the same optical formula as the pre-AI version (produced from 1974 to 1977). Unlike the AI-S version, it does not feature CRC.
Uses screw in hood HN-2.
Rating: Ed: -, User: - (normalized, 0=useless, 50=average, 100=excellent).
Mount: Nikon F.
Aperture range: f/2.8 to f/22.
Close focus distance (CFD): 30 cm / 0.98 ft (from sensor plane).
CFD magnification: 1:7.5 / 0.13X.
Filter diameter: 52 mm.
L x D, W: 55 x 64 mm, 245 g.
IR: Poor IR performance.
Nikon is a multinational corporation headquartered in Tokyo, Japan specializing in optics and imaging. Its products include cameras, lenses, flash units, scanners, binoculars, microscopes, measurement instruments, and steppers (used in semiconductor fabrication). The company was founded in 1917 as Nippon Kōgaku Kōgyō Kabushikigaisha (Japan Optical Industries Corporation), and renamed Nikon Corporation, after its cameras, in 1988. Nikon Corporation is one of the companies of the Mitsubishi Group.