Spring Ephemeral Ultra-Micro-Nikkor 28mm F1.7e

Nippon Kogaku's Fighting Lens
The Final Red Baron
Ultra-Micro-Nikkor 28mm F1.7e
Collector's Dream

Ultra-Micro-Nikkor 28mm F1.7e

One of the more fantastic and rarer lens for the Ultra-Micro-Nikkor series.
The Ultra-Micro-Nikkor 28mm F1.7e consisted of ten elements set in a heavy weight and black painted plain barrel with L39 Leica thread. We called "Black Cylinder".
The Ultra-Micro-Nikkor 28mm F1.7e used 40.5 mm accessories. A Nikon 40.5 mm reversing adapter is just fit to her.
You can see very beautiful and mysterious red coating on the lens.

Very Fine Lens

Beautiful Heavy Duty Lens

Eccentric Red Coating Lens

Specifications

Ultra-Micro-Nikkor 28mm F1.7e

Focal length :  28.7 mm
Max. aperture :  f/1.7 (fixed)
Min. aperture :  f/1.7 (fixed)
Lens construction :  10 elements in 8 groups
Standard magnification :  1/10X
Picture angle :  14° 30'
Standard wavelength :  546.1 nm (e-line)
Vignetting :  0%
Distortion :  -0.005%
Aerial resolving power :  700 lines/mm (8 mm⌀)
Aerial resolving power :  800 lines/mm (6 mm⌀)
Image area :  8 mm⌀
Subject area :  80 mm⌀
Overall working distance :  315 mm
Filter size :  d=40.5 mm p=0.5 mm
Mount :  Leica L39 screw mount
Weight :  465 g
Actual weight :  457.5 g
Accessories :  Front and rear lens caps, wooden case

Release date :  Around 1973
Price :
  462,000 Japanese YEN (1974)
  462,000 Japanese YEN (1976)
  462,000 Japanese YEN (1977)
  Special order (1982)

Ultra-Micro-Nikkor 28mm F1.7e Lens Construction

Ultra-Micro-Nikkor 28mm F1.7g

Focal length :  28.7 mm
Max. aperture :  f/1.7 (fixed)
Min. aperture :  f/1.7 (fixed)
Lens construction :  10 elements in 8 groups
Standard magnification :  1/10X
Picture angle :  14° 30'
Standard wavelength :  435.8 nm (g-line)
Vignetting :  0%
Distortion :  -0.005%
Aerial resolving power :  800 lines/mm (8 mm⌀)
Aerial resolving power :  900 lines/mm (6 mm⌀)
Image area :  8 mm⌀
Subject area :  80 mm⌀
Overall working distance :  315 mm
Filter size :  d=40.5 mm p=0.5 mm
Mount :  Leica L39 screw mount
Weight :  460 g
Accessories :  Front and rear lens caps, wooden case

Release date :  Around 1973
Price :
  511,000 Japanese YEN (1974)
  511,000 Japanese YEN (1976)
  511,000 Japanese YEN (1977)

Ultra-Micro-Nikkor 28mm F1.7g Lens Construction

Black Cylinder Ultra-Micro-Nikkor 28mm F1.7e

Mirrorless Interchangeable-Lens Camera

You can use the Ultra-Micro-Nikkor 28mm F1.7e lens easily with mirrorless camera.

Ultra-Micro-Nikkor 28mm F1.7e

Ultra-Micro-Nikkor 28mm F1.7e and Mirrorless Camera

Recent Image of Ultra-Micro-Nikkor 28mm F1.7e

It is her recent image.
She is always smiling.
Her front lens is concave. Her red coating is elegant.

UMN 28mm F1.7e in the Cool Summer

The front lens element is concave and red coated

From the Nikon Museum 2018 Special Exhibition

Ultra Micro Nikkor 28mm F1.7 and other very rare prototype lenses were exhibited in "Ultra Micro Nikkor Exhibition" so I would like to introduce to you.
You can get the large size image by clicking on the following some photographs.

Special Exhibition Ultra-Micro-NIKKOR at Nikon Museum

L :  Ultra-Micro-NIKKOR 28mm F1.5 Prototype
R :  Ultra-Micro-NIKKOR 28mm F1.7 Prototype

Ultra-Micro-NIKKOR 28mm F1.5 Prototype for e-line, 1972
No. 320354

Ultra-Micro-NIKKOR 28mm F1.7 Prototype for g-line, 1972

These photo images were introduced from the Nikon Museum Special Exhibition "Ultra-Micro-NIKKOR". The special exhibition was held from April 3, 2018 to June 30, 2018.
Please brose to the report for detailed explanation.
Nikon Museum Special Exhibition Report