Nikkor 24mm f/2.8 N non-AI (classic non-AI '67-'72, multicoated non-AI '72-'75, K non-AI '75-'77)
This sample circa '70.
Filter size: 52mm
Close focus distance: 1 foot or 0.3 meters (marked)
Aperture range: f/2.8 - f/16
Aperture blades: 6 (the later K version has 7 blades)
Depth of field scale for f/4, 8, 11, 16 plus IR focusing index (the later K version stops down to f/22)
Design: 9 elements in 7 groups
Nikkor Thousand and One Nights
This is the first Nikkor lens with close range correction or CRC. Mine has the factory AI conversion. It is a solid lens - it is actually a little too well-behaved and modern looking for my taste.
The Nippon Kogaku, Nikon, and C versions are all fairly common.
Here are the single and multi-coated versions side-by-side:
The latest K version has 7 aperture blades and stops down to f/22.
More photos from this lens