Difference between revisions of "KOO-Tiyoko"
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| − | The '''KOO-Tiyoko''' is a leaf shutter certainly made by [[Minolta|Chiyoda Kōgaku Seikō]] (predecessor of [[Minolta]]) for military use. "Tiyoko" is an alternative writing for "Chiyoko", abbreviation of <U>Chi</U>yoda <U>Kō</U>gaku. The meaning of "KOO" is | + | The '''KOO-Tiyoko''' is a leaf shutter certainly made by [[Minolta|Chiyoda Kōgaku Seikō]] (predecessor of [[Minolta]]) for military use. "Tiyoko" is an alternative writing for "Chiyoko", abbreviation of <U>Chi</U>yoda <U>Kō</U>gaku. The meaning of "KOO" is at present unclear. |
The KOO-Tiyoko gives only 1/100, 1/200 and 1/400 speeds, and was probably made specifically for [[Japanese aerial cameras|aerial cameras]]. It has a black front plate, with the name ''KOO–TIYOKO'' at the top and no provision for an aperture scale. One example is known with a [[Hexar lenses|Hexar Ser.II 75mm f/3.5]], presumably mounted on an Army Type 99 Ultra Small Aerial Camera ([[GSK-99]]).<ref> [http://www2f.biglobe.ne.jp/~ter-1212/sakura/hexarser2.htm R. Konishi website]. </ref> | The KOO-Tiyoko gives only 1/100, 1/200 and 1/400 speeds, and was probably made specifically for [[Japanese aerial cameras|aerial cameras]]. It has a black front plate, with the name ''KOO–TIYOKO'' at the top and no provision for an aperture scale. One example is known with a [[Hexar lenses|Hexar Ser.II 75mm f/3.5]], presumably mounted on an Army Type 99 Ultra Small Aerial Camera ([[GSK-99]]).<ref> [http://www2f.biglobe.ne.jp/~ter-1212/sakura/hexarser2.htm R. Konishi website]. </ref> | ||
Revision as of 16:04, 18 July 2010
The KOO-Tiyoko is a leaf shutter certainly made by Chiyoda Kōgaku Seikō (predecessor of Minolta) for military use. "Tiyoko" is an alternative writing for "Chiyoko", abbreviation of Chiyoda Kōgaku. The meaning of "KOO" is at present unclear.
The KOO-Tiyoko gives only 1/100, 1/200 and 1/400 speeds, and was probably made specifically for aerial cameras. It has a black front plate, with the name KOO–TIYOKO at the top and no provision for an aperture scale. One example is known with a Hexar Ser.II 75mm f/3.5, presumably mounted on an Army Type 99 Ultra Small Aerial Camera (GSK-99).[1]
