Japanese 3×4 and 4×4 pseudo TLR

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The Riken Chukon Ref was a 3x4cm format camera released around 1940. It was a pseudo TLR: its shape imitated a twin lens reflex but it was fixfocus and the finder was nothing more than a big brilliant finder. It had a Chukon Anastigmat 50/6.3 3-element lens, a T-B-25-50-75-100 shutter and a black bakelite body. It is said at Ricoh's corporate site that it was only sold by Riken and made by another company.

All the info above comes from Ricoh's corporate site, no other source of information has been found.

Note: The name Chūkon (忠魂) means "faithful spirit" and can have the sense of "loyal dead" or "war dead". Riken used such weird "patriotic" names during the war.

Links

Ricoh's corporate website:


Asahi Bussan and Riken prewar and wartime cameras (edit)
rigid or collapsible
Vest Adler | Gokoku | Semi Kinsi | Letix | Olympic | New Olympic | Regal Olympic | Semi Olympic | Super Olympic | Vest Olympic | Riken No.1 | Ricohl | Roico | Seica | Zessan
folders pseudo TLR TLR
Semi Adler | Adler III | Adler A | Adler B | Adler C | Adler Four | Adler Six | Gaica | Heil | Kinsi Chukon Ref Ricohflex | Ricohflex B