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| Japanese TLR
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| 120 film (prewar and wartime)
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| 6×6cm
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Elmoflex | First Reflex | Kiko Flex | Lyra Flex | Minoltaflex | Minoltaflex Automat | Minoltaflex military prototype | Nōman Flex | Ostenflex | Prince Flex | Ricohflex (original) | Ricohflex B | Rollekonter | Roll-o-Frex | Rorter Ref | Rorterflex | Sakura-flex | Simpuflex | Starflex | Taroflex | Valflex | Yokusanflex
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| 120 film (postwar)
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| 6×7cm
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Koni-Omegaflex M
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6×6cm
A–L
(edit)
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Accuraflex | Aires Automat | Airesflex | Aires Reflex | Akumiflex | Alfaflex | Alpenflex | Amiflex | Autoflex | Beautyflex | Bikor-Flex | Bioflex | Companion | Copenflex | Cosmoflex | Crown Flex | Crystar Flex | Crystar 25 | Dorimaflex | Dorisflex | Easternflex | Echoflex | Eicaflex | Elbowflex | Elegaflex | Eleger Reflex | Elicaflex | Elizaflex | Elmoflex | Firstflex | Fodorflex | Fujicaflex | Geltoflex | Gnoflex | Graceflex | Halma Auto | Halma Flex | Hobiflex | Honorflex | Isocaflex | Itohflex | Kalloflex | Kallovex | Koniflex | Krimsoflex | Larkflex | Laurelflex | Luminaflex | Lustreflex | Lyraflex
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6×6cm
M–Z
(edit)
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Magniflex | Malcaflex | Mamiyaflex I | Mamiyaflex II | Mamiyaflex Automat A | Mamiya C | Mananflex | Manonflex | Marioflex | Metascoflex | Middl Flex | Mihamaflex | Mikono Flex S, P | Minolta Autocord | Minoltacord | Minoltaflex Automat prototypes | Minoltaflex II, III | Minoriflex | Molforeflex | Monade Flex | Morrisflex | Nikkenflex | Nikoflex | Ofunaflex | Olympus Flex | Oplenflex | Oriflex | Orionflex | Osiroflex | Pigeonflex | Princeflex | Prince Junior | Prinz Auto | Prinz Flex | Rectaflex | Ricohflex III–VII, Super, Holiday, Million | Ripeflex | Rolex | Ruvinalflex | Sanonflex | Selcaflex | Silverflex | Starflex | Sunflex IV | Superflex | Toyocaflex | Tsubasaflex | Tubasaflex | Veri Flex | Wagoflex | Walzflex | Welmyflex | Yashica-A, B, C, D, E, 635 | Yashica-Mat, EM, LM, 12, 24, Mat-124 | Zenobiaflex
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| 127 film
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| 4×4cm
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Cordlef | Olympus Eye 44 | Haco-44 | Halma 44 | Kino-44 | Laqon-44 | Minolta Miniflex | Primo Jr | Prinz 44 | Ricohmatic 44 | Ricoh Super 44 | Sawyer's Mark IV | Tower 44 | Tower 44B | Toyoca-44 | Walz Automat 44 | Yashica-44, 44A, 44LM
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| 35mm film
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| 24×36mm
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Haco 35 | Hulda 35 | Samocaflex 35 | Toyoca 35 | Yallu Flex
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| No-need-darkroom
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| 28×40mm or 3×4cm
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Light-Go | B Light-Go | Maruso Camera | Meikai | Meisupi
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| Subminiature
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| 20mm film
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Mycroflex
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| 17.5mm film
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Gemflex | Sun
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| Japanese medium format SLR and pseudo TLR ->
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| Other Japanese 6×6, 4.5×6, 3×4 and 4×4, 4×5 and 4×6.5 ->
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The Princeflex was a Japanese 6x6 TLR made by a company called Toyo Seiki (Tōyō Seiki Kōgaku, 東洋精機光学) or simply Prince Camera (プリンスカメラ). It had nothing to see with the 1937 Prince Flex made by Neumann & Heilemann. (See the Prince page for a discussion of the various cameras with that name.)
The original Princeflex had knob advance with a red window. Focusing was by a knob on the left side, sliding the whole front plate. There was an accessory shoe on the left. The shutter release was at the bottom left of the front plate, with a release lock. It had Luminar 80/3.5 lenses and a TSK shutter B-1-200 (TSK probably for Toyo Seiki Kogaku). It could take 4.5x6 pictures with a mask. In this page at yume_camera, there is a picture of what is probably a prototype (s/n 1001), marked TOYOSEIKI OPT.CO.LTD. under the Princeflex name plate.
There is a Princeflex II mentioned here at Japan Family Camera, it probably added automatic advance with an exposure counter but no double exposure prevention.
The Prince Junior was a cheaper model, with J-Luminar 80/3.5 viewing and taking lenses and a Ceres B-1-300 shutter. McKeown also mentions a Rectus shutter, and shows a picture of a camera that differs from the ones linked below, in the body shape and name lettering.
It is possible that the Elbowflex was the same camera, indeed they look very similar and clearly share parts.
Links
