Ultra Micro Nikkor 125mm F2.8 THE LENS
Ultra Micro Nikkor 125mm F2.8 THE LENS

The Origin of the LENS POEM
Ultra-Micro-Nikkor 125mm F2.8
December 2001

The First Class Lens
Ultra-Micro-Nikkor 125mm F2.8
Extreme High Resolution Lens
Grand History of The Legend
King of the Lens

King of the Lens

One of the more exotic and rare lenses for the Ultra-Micro-Nikkor series.
The Ultra-Micro-Nikkor 125mm F2.8 consisted of seven elements set in a heavy weight and black painted fat barrel.
The Ultra-Micro-Nikkor 125mm F2.8 used 72mm accessories. A Nikon 72mm filter is just fit to her. You can see very beautiful and gorgeous coating on the lens.

The First Class Lens

The Beautiful and Brilliant Lens

The Beautiful and Luxurious Lens

King of the Lens


Ultra-Micro-Nikkor 125mm F2.8

An improved version of the previous 105mm F2.8 lens for making photomasks with the "one shot method".   The picture plane of this lens has been enlarged to match the size of the semiconductor wafer and covers a range of 28mm in diameter.

Focal length :  125 mm
Max. aperture :  f/2.8
Min. aperture :  f/8
Lens construction :  7 elements in 6 groups
Standard magnification :  1/25X
Picture angle :  12.3°
Standard wavelength :  546 nm (e-line)
Vignettings :  0% at f/2.8
Distortion :  -0.3%
Aerial resolving power :  400 lines/mm
Aperture scale :  2.8, 4, 5.6, 8
Image area :  28 mm⌀
Object area :  700 mm⌀
Overall working distance :  3,364 mm
Filter size :  d=72 mm   p=0.75 mm
Mount :  Screw   d=62 mm   p=1 mm
Weight :  695 g
Actual Weight :  709.0 g
Accessories :  Front and rear lens caps, wooden box
Price :    840,000 Japanese YEN (1969)
Price :  1,000,000 Japanese YEN (1974)

Ultra Micro Nikkor 125mm F2.8 Lens Construction

Ultra Micro Nikkor 125mm F2.8 Lens Construction

Lens Serial Number

In 2018 a special exhibition of Ultra Micro Nikkor lenses was held at the Nikon Museum in Tokyo. The exhibition was held from April 3rd 2018 to June 30th 2018.
You can get detailed information on UMN Nikon Museumn Report .

I was interested in prototype of Ultra Micro Nikkor 125mm F2.8 lens. The manufacturing serial number for that lens was No. 930102. Apparently, it seems that it started from No. 930101. The manufacturing serial number of the lens I own is No. 930371. Probably it is roughly the 270th lens.

Prototype Ultra Micro Nikkor 125mm F2.8, 1965
Lens Serial Number No. 930102
Nikon Museum Collection

Ultra-Micro-Nikkor 125mm F2.8 Photography

I would like to show you the some photographs taken by the Ultra-Micro-Nikkor 125mm F2.8 Lens.
You can get the large size image by clicking on the following some photographs.

Nikon Camera with Ultra-Micro-Nikkor 125mm F2.8

The Sky in Japanese Autumn

Japanese Autumn Rice Field

Autumn Red Flower

Nikon and Ultra-Micro-Nikkor 125mm F2.8

Sakura Season in Japan

Sakura Cherry Blossom in Japan

Sakura Cherry Blossom in Japan

Brilliant Color Like Kodachrome 64 Film

Old Lens is Not Old

The following images were taken with a compact digital camera in December 2001.
I used an old and low-performance camera. However, the images are very powerful and beautiful also now. That's why I still want to show you these images.

The Beautiful and Brilliant Lens

Image taken in December 2001

Nikon Z Album

I mounted the Ultra Micro Nikkor 125mm F2.8 on Nikon Z 6 and took the following pictures. The UMN 125mm F2.8 lens produce very excellent images at long distances.

Nikon Z 6 with Ulta Micro Nikkor 125mm F2.8

UMN 125mm F2.8, ASA 400 F8 1/2000 sec. -0 +0

UMN 125mm F2.8, ASA 400 F8 1/2000 sec. -0 +0


Copyright Michio Akiyama, Tokyo Japan 2001, 2020