Professor K's Micro Nikkor 70mm F5 and his Old Collection

Professor K. is researching the medical science in famous National Universities in Japan.
Because he is shy, I write Professor K. him by the initial.
To measure human's organ, he is developing a very highly accurate experiment equipment by himself.
He needed an efficient super macro lens to install in the experiment equipment.
Professor K. selects Micro Nikkor 70mm F5 for his mission critical medical research.
Yes, it is lenses produced 30 years ago.
He was to have obtained the lens by chance.
He was supported by chance. The name is Micro Nikkor 70mm F5.

Specifications

Focal length 70mm
Max. aperture f/5
Min. aperture f/22
Lens construction 5 elements, 4 groups
Standard magnification range 1/12X
Usable magnification range 1/30X - 1/5X
Corrected chromatic aberration range 400 - 650nm
Distortion 0.3%
Image size 55.2mm circle
Image distance at standard magnification 985.8mm
Weight 250g

Very Old Collection

Professor K. has a unique hobby.
He is a collector of the old planes and chisels.
Those plane and chisel are carpenter's tools. He is collecting very old tools.
A very old kind of plane is taken of a picture to the photograph above.
It is not a knife but a plane.

The lens, Micro Nikkor 70mm F5 has "Akane-Red" coating.
"Akane-Red", Madder Red is very old, red Japan color.
You can see red color 1000 years ago with this wonderful macro lens.

Special Thanks Professor K.!