Sankyō Kōki

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See also Sankyō Kōgaku, another Japanese lens maker.

Sankyō Kōki K.K. (三協光機㈱) was a Japanese company. It used the brand name Komura for a variety of lenses. It also used the brand name Chibanon for enlarging lenses, and perhaps for some camera lenses as well.

Lens list

Camera lenses

• Komura lenses in 39mm screw mount
• Komura lenses in 42mm screw mount
• Komura lenses in Exakta mount
• Komura lenses in Contax rangefinder mount

Sankyō Kōki may have supplied lenses to the Tōsei Kōki company, before the use of the Komura brand: a Semi Frank has been observed with an E. Chibanone lens (a curious spelling variant), and Chibanon or Chibanone (チバノン) lenses are advertised on the Copenflex and Sanon Six, as well as another lens perhaps called Chibar (チバー) on the Sanon Six II.

Other

• Chibanon enlarging lenses: 80/3.5, 75/3.5, 50/3.5, 50/2.8

Links

In Japanese:

• Chibanon and Chibanone lenses in Terasaki Haruhisa's website
• Advertisement by Sankyō Kōki dated 1954, reproduced in Shashin-Bako
• Komura 80mm f/3.5 for Leica at Kamera to Shashin to Neko to