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The Seikosha-SLV was made by Seikōsha, the manufacturing branch of Hattori Tokei-ten. It has a quiet 5-blade leaf shutter with B, 1–500 speeds. A version without slow speeds existed. There is also a Seikosha-SLS with 1/1000 sec. that has been improved to achieve a faster shutter speed.

Cameras with SLV shutter

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

Cameras with SLV shutter w/o slow speeds

Cameras with SLS shutter


  • 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)