Ultra Micro Nikkor 28mm F1.8 Red Point

Ultra-Micro-Nikkor 28mm F1.8 Red Point

The rim of the lens is engraved as " M=1/10" with red character.
We called Red Pointed Ultra-Micro-Nikkor.

Specifications

Focal length 28.2mm
Max. aperture f/1.8
Min. aperture f/8
Lens construction 9 elements, 7 groups
Standard magnification 1/10X
Standard wavelength 546.1 milli-micron (e-line)
Vignettings 0 %
Distortion 0.002 % !!
Aerical resolving power 600 lines/mm (8mm circle)
Aerical resolving power 650 lines/mm (7mm circle)
Aerical resolving power 700 lines/mm (6mm circle)
Image area 8mm circle
Subject area 80mm circle
Overall working distance 315mm
Weight 330 g