KOO-Tiyoko
The KOO-Tiyoko is a 00-sized 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 "K" 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. Examples are known with a Hexar Ser.II 75mm f/3.5[1] or a Simlar 7.5cm f/3.5,[2] mounted on an Army Type 99 Ultra Small Aerial Camera (GSK-99).
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images by Dirk HR Spennemann (Image rights) |
Notes
- ↑ Example pictured in this page of the R. Konishi website.
- ↑ Example pictured in this article.