Japanese plate SLR cameras (edit)
atom (4.5×6cm) Simplex Reflex | Speed Reflex
meishi (5.5×8cm) Speed Reflex
daimeishi (6.5×9cm) Convex Reflex | Hogo Reflex | Idea Reflex (1932) | Neat Reflex | Simplex Reflex | Speed Reflex
tefuda (8×10.5cm) Idea Reflex (1910 and 1911) | Idea Reflex (1932) | Neat Reflex | Photo Deluxe Reflex | Speed Reflex
nimaigake (8×12cm) Idea Reflex (1910 and 1911) | Sakura Reflex Prano
kabine (12×16.5cm) Idea Reflex (1910 and 1911)
daikabine (13×18cm) Guaranteed Reflex
unknown Hardflex | Leinflex | Photoman Special Reflex
Japanese plate film: monocular, box, folding bed and strut-folding ->
3×4 and 4×4, 4×5 and 4×6.5, 4.5×6, 6×6 and 6×9 ->

The Convex Reflex (コンベックスレフレックス) is a Japanese SLR camera taking daimeishi (6.5×9cm) plates or pack film, made by Sone Shunsuidō in the 1920s.

The camera has a box-shaped body with a rigid tapered front, a large viewing hood, a focusing helical and various controls on the photographer's right, certainly to wind, set and trip the focal plane shutter. It is not known if the camera has a revolving back or not.

The Convex Reflex was advertised in the November 1924 issue of Ars Camera as "soon coming to the market" (近々市場に出現する).[1] In a later advertisement, it was offered along with the Secrette 4.5×6cm detective camera and Apollo 6.5×9cm folder;[2] the price is given as ¥135 and the lens is described as a Complanar (コンプラナー) f/4.5, specially made by a French company in Paris for Tokyo Camera Works, the manufacturing branch of Sone Shunsuidō.


  1. Advertisement in Ars Camera November 1924.
  2. Advertisement reproduced in Morishita, p.70 of Kurashikku Kamera Senka no.22.