Magna

The Magna is a Japanese leaf shutter in #0 size, providing 25, 50, 100, B, T speeds and inspired by the German Vario. It appeared in 1930 and was the first camera shutter made by Seikōsha, the manufacturing branch of Hattori Tokei-ten.

Cameras equipped (incomplete list, and not all variants are concerned):

• Lily Hand 6.5×9 plate folder by Konishiroku (maybe with a needle selftimer device like the Licht)
• New Kokka Hand 6.5×9 plate folder by Kuribayashi

Bibliography

• Kamera no mekanizumu sono I: "Hai! Chīzu" Shunkan o torae-tsuzukeru shattā-ten (カメラのメカニズム・そのⅠ・「ハイ！チーズ」瞬間をとらえ続けるシャッター展, Camera mechanism, part 1 "Cheese!" Exhibition of instant taking shutters). Tokyo: JCII Camera Museum, 2002. (Exhibition catalogue, no ISBN number)

Links

• A page about early Japanese shutters at Japan Camera Museum
• Chronology at current Seiko site