Difference between revisions of "Teleros"
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| − | The '''Teleros''' is a telephoto lens made by [[Ross]] of London. It was introduced in | + | The '''Teleros''' is a telephoto lens made by [[Ross]] of London. It was introduced in 1922, and replaced the [[Telecentric]]. It was made until at least 1938.<ref>[http://www.cameraeccentric.com/html/info/ross_2.html Ross advertisement] in the ''British Journal Almanac 1938'', at [http://www.cameraeccentric.com/ Camera Eccentric].</ref> It was made in a wide range of focal lengths, from a 4-inch Leica-fitting lens to a 40-inch lens intended for 8½x6½ inch plate cameras. It was available as an f/5.5 with magnification of two (i.e. the back-focus is one half of the focal length) or an f/6.3 with a magnification of three. |
Revision as of 21:49, 20 May 2011
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The Teleros is a telephoto lens made by Ross of London. It was introduced in 1922, and replaced the Telecentric. It was made until at least 1938.[1] It was made in a wide range of focal lengths, from a 4-inch Leica-fitting lens to a 40-inch lens intended for 8½x6½ inch plate cameras. It was available as an f/5.5 with magnification of two (i.e. the back-focus is one half of the focal length) or an f/6.3 with a magnification of three.
Notes
- ↑ Ross advertisement in the British Journal Almanac 1938, at Camera Eccentric.
Links
- Leica-mount 4-inch Teleros in past auction at Westlicht Photographica.
- Tropical Folding Minex with a Ross Xpres and a Teleros of about 1934, at Early Photography.
