Difference between revisions of "B&L Iris Diaphragm Shutter"
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The '''Iris Diaphragm Shutter''' of 1891 was the first of [[Bausch & Lomb]]'s characteristic series of two-piston multi-speed brass shutters with [[iris diaphragm]] for standard camera lenses. It has an f-stop and shutter speed setting device on top that reminds of a clock or a ship's machine telegraph. It was invented by Edward Bausch, George Hommel, and Andrew [[Wollensak]].<ref>1891 version, see [http://www.piercevaubel.com/cam/acc/shb&ldiaphagm1891brass795.htm Iris Diaphragm Shutter, 1891-type, Brass - c. 1896] on piercevaubel.com</ref> This brass shutter was also made in an aluminium version.<ref>Alu variant, see [http://www.piercevaubel.com/cam/acc/shb&lalumdiaphragm107.htm Aluminum Iris Diaphragm Shutter - c. 1900] on piercevaubel.com</ref> The predecessing version of 1888, invented by Edward Bausch, had only one piston for remote shutter release tube connection, and no shutter speed setting scale.<ref>1888 version, see [http://www.piercevaubel.com/cam/acc/shb&ldiaphagm1888820.htm Iris Diaphragm Shutter, 1888-type, Brass - c. 1889] on piercevaubel.com</ref> | The '''Iris Diaphragm Shutter''' of 1891 was the first of [[Bausch & Lomb]]'s characteristic series of two-piston multi-speed brass shutters with [[iris diaphragm]] for standard camera lenses. It has an f-stop and shutter speed setting device on top that reminds of a clock or a ship's machine telegraph. It was invented by Edward Bausch, George Hommel, and Andrew [[Wollensak]].<ref>1891 version, see [http://www.piercevaubel.com/cam/acc/shb&ldiaphagm1891brass795.htm Iris Diaphragm Shutter, 1891-type, Brass - c. 1896] on piercevaubel.com</ref> This brass shutter was also made in an aluminium version.<ref>Alu variant, see [http://www.piercevaubel.com/cam/acc/shb&lalumdiaphragm107.htm Aluminum Iris Diaphragm Shutter - c. 1900] on piercevaubel.com</ref> The predecessing version of 1888, invented by Edward Bausch, had only one piston for remote shutter release tube connection, and no shutter speed setting scale.<ref>1888 version, see [http://www.piercevaubel.com/cam/acc/shb&ldiaphagm1888820.htm Iris Diaphragm Shutter, 1888-type, Brass - c. 1889] on piercevaubel.com</ref> | ||
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<REFERENCES/> | <REFERENCES/> | ||
[[Category:1839-1889]] | [[Category:1839-1889]] | ||
[[Category:leaf shutters]] | [[Category:leaf shutters]] | ||
Revision as of 04:28, 23 November 2016
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| Bausch & Lomb Iris Diaphragm shutter with Bausch & Lomb lens image by Luis Cozeto (Image rights) |
The Iris Diaphragm Shutter of 1891 was the first of Bausch & Lomb's characteristic series of two-piston multi-speed brass shutters with iris diaphragm for standard camera lenses. It has an f-stop and shutter speed setting device on top that reminds of a clock or a ship's machine telegraph. It was invented by Edward Bausch, George Hommel, and Andrew Wollensak.[1] This brass shutter was also made in an aluminium version.[2] The predecessing version of 1888, invented by Edward Bausch, had only one piston for remote shutter release tube connection, and no shutter speed setting scale.[3]
Notes
- ↑ 1891 version, see Iris Diaphragm Shutter, 1891-type, Brass - c. 1896 on piercevaubel.com
- ↑ Alu variant, see Aluminum Iris Diaphragm Shutter - c. 1900 on piercevaubel.com
- ↑ 1888 version, see Iris Diaphragm Shutter, 1888-type, Brass - c. 1889 on piercevaubel.com
