Beautiful Grace Röntgen Xebec 5cm F1.5 Lens

Beautiful Grace Röntgen Xebec 5cm F1.5 Lens

Vintage and Historical Legacy Lenses

Beautiful Grace Röntgen Xebec 5cm F1.5 Lens

Röntgen Xebec 5cm F1.5

Do you know Röntgen Xebec 5cm F1.5 lens?
I would like to talk about Röntgen Xebec 5cm F1.5 lens that no one knew about.
If you'd like to read the in-depth contents, please refer to a Japanese page by Google Language Translator.
Please enjoy and have fun!! Thank you!

Xebec for Röntgen
F=5cm 1:1.5 No. 72091

Probably this lens seems to have been manufactured in 1943 or 1944.

Wildwood Flower

Flowering Flower on Snow Ring

Camellia Sasanqua and Xebec 5cm F1.5 Lens

Descriptive performance of Noble Röntgen Xebec 5cm F1.5 lens

Before mentioning the background and history of lens development, I want to show you the examples of that picture.
It has the power to reproduce the flowing shining life sense instantly.
Beautiful graceful lens is also beautiful grace.

Collective Unconscious by Xebec 5cm F1.5 Lens

Beautiful Grace Röntgen Xebec 5cm F1.5 Lens

Enkianthus Perulatus

If you want to make a poetry rather than a plant book, you will be happy if you use the Röntgen Xebec 5cm F1.5 Lens.

Enkianthus Perulatus by Xebec 5cm F1.5 Lens

Enkianthus Perulatus

Enkianthus Perulatus Röntgen Xebec 5cm F1.5 Lens

Grand Gorgeous Sakura Nippon

It is fun to join the Hanami Party with Röntgen Xebec 5cm F1.5 Lens.

Grand Gorgeous Nippon

Brilliant Afternoon Light Ray Nippon

Grand Gorgeous Xebec 5cm F1.5 Lens

To meditate under a beautiful Cherry Blossoms is a traditional Japanese event.
Of course, Hanami meals with friends or family is very pleasant.

Hanami Bento

Nikon with Xebec 5cm F1.5 Lens

Hanami Bento

A happy Hanami party is still going on.
Please have a look at the pictures taken by the Röntgen Xebec 5cm F1.5 Lens. I shot beautiful, graceful Sakura flowers with a beautiful, graceful Xebec 5cm F1.5 lens.

Nikon and Xebec 5cm F1.5 Lens

Beautiful Grace Röntgen Xebec 5cm F1.5 Lens

Noble White Like Edelweiss

Cherry Blossoms Shaking in the Spring Wind

Attractive Pale Color

Röntgen Xebec 5cm F1.5 Lens

Milky Glassy Flowers

Grace and Elegance

A Beautiful Universe Planet

You may feel the Japanese traditional beauty and power of the Xebec 5cm F1.5 Lens.

Presence of a Lens Over Time and Space

Metaphysical Lens Composition

Japanese Traditional Beauty and Xebec 5cm F1.5 Lens

Mysterious Lens Depiction and Medieval Japanese Literary Color

History of the Röntgen Xebec 5cm F1.5 Lens

The Röntgen Xebec 5cm F1.5 lens was attached to the following X-ray camera set.

NIPPON-KOKEN's Indirect X-ray Camera Set

This X-ray camera set was manufactured by NIPPON-KOKEN.
NIPPON-KOKEN was established in April 1943 in Tokyo to manufacture X-ray equipment.

Kaze Tachinu

Tatsuo Hori's novel "Kaze Tachinu" published in 1938 is a sad story that the fictional heroin dies of tuberculosis.
At that time in Japan there were many people who died of tuberculosis.

Kaze Tachinu, The Wind Rises by Tatsuo Hori and Röntgen Xebec 5cm F1.5

NIPPON-KOKEN's Indirect X-ray Camera

Direct shooting of X-ray required huge equipment and darkroom.
To solve this problem, a method of fluorescent image photographing by an X-ray indirect imaging apparatus was established.
In 1942, the Ministry of Health and Welfare of Japan established a fluorescent screen size of 35 cm x 35 cm as a standard.
The screen size of the X-ray camera film was 24 mm x 24 mm.
It was possible to take 50 pictures with one film magazine.

NIPPON-KOKEN's Indirect X-ray Camera and Lens Unit

NIPPON-KOKEN's Indirect X-ray Cameras

Beautiful Xebec 5cm F1.5 Lens

The screw diameter of this lens mount is 35.7 mm.
The filter attachment size is 41.0 mm.

Separate Front and Rear Lens Elements

Kajiro Optical Laboratory

I looked about the Röntgen Xebec 5cm F1.5 Lens.
"Xebec" is the product brand name of K. O. L.
K. O. L. is an abbreviation for Kajiro Optical Laboratory, which is the Kajiro Kogaku Kenkyujyo.

Showa 14 (1939) July
Sai Kajiro established Kajiro Optical Laboratory (K. O. L.) in Tokyo city.

Showa 16 (1941)
For the purpose of supplying photographic lenses, Gojyo Koki Seisakusho was established.

Showa 16 (Latter half of 1939)
With the establishment of Gojyo Koki, traded trademark right with former factory to Kokusaku Seiko Kabushiki Gaisya that had business relationship.
Therefore, K. O. L. lens after 1942 will be a product of Kokusaku Seiko who changed management.

Showa 18 (1943)
The 50 mm F1.5 lens with 7 elements of 5 groups was developed.
It was diverted for X-ray camera.
It is the birth of the Röntgen Xebec 5cm F1.5 Lens.

Kajiro Brothers

The Kajiro brothers were the main characters of the K. O. L.
The following photos and information could be published in cooperation with Ryosuke Mori of the Ritsumeikan University.

Sai Kajiro, 1900-1996
Photo: Copyright (c) 2017, The Kajiro Family, Ryosuke Mori, All Rights Reserved.

Sai Kajiro.
Born in Chiba Prefecture's richest man's eldest son.
He founded K. O. L. (Kajiro Optical Labolatory) in 1940.
Graduated from Keio University, Tokyo.

Kaku Kajiro, 1903-1990
Photo: Copyright (c) 2017, The Kajiro Family, Ryosuke Mori, All Rights Reserved.

Kaku Kajiro
Born in Chiba Prefecture's richest man's second son.
Graduated from Technische Universität Berlin.
Acquired optical master's degree (Diplome Optiker) in 1928.
He designed Röntgen Xebec 5cm F1.5 lens.
This picture was taken at the age of 19 before studying abroad in Germany.

Kaku Kajiro and His German Wife, Near Berlin, 1930
Photo: Copyright (c) 2017, The Kajiro Family, Ryosuke Mori, All Rights Reserved.

Kaku Kajiro married a German woman in Germany.
This picture seems to be right after graduation from Technische Universität Berlin.
The motorcycle on which he is riding is BMW-R32. His wife is on the sidecar.

Kaku Kajiro and His Harley Davidson
He Designed Röntgen Xebec 5cm F1.5

Photo: Copyright (c) 2017, The Kajiro Family, Ryosuke Mori, All Rights Reserved.

Literature of Summer Resort

Every day of that summer, I took a walk with the Röntgen Xebec 5cm F1.5 lens.
I felt that the era came back over 70 years ago.
The old lens is literature.
The old lens has consciousness.

Listen to the Sound of Summer Wind

There are No Facts, Only Interpretations

Japanese Traditional Summer and Xebec 5cm F1.5 Lens

The Silent Summer of Showa 18th (1943)

Afterword

I wrote this article in February 2017.
It is not a topic of Nikkor lenses.
I have collected old Nikon X-ray lenses. At one time I met a very beautiful lens.
The lens was an X-ray lens manufactured in Japan over 70 years ago.
The name of that lens is called Röntgen Xebec 5cm F1.5.
I lived with the old lens.
The Röntgen Xebec 5cm F1.5 lens allowed me to take lots of beautiful photos.
This article is a historical story of that beautiful lens.

RED BOOK NIKKOR
Michio Akiyama/NIPPON

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Copyright Akiyama Michio, Tokyo Japan 2017