Difference between revisions of "Teleros"
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+ | * [http://www.earlyphotography.co.uk/site/entry_C346.html#C346 Tropical Folding Minex with a Ross Xpres and a Teleros of about 1934], at [http://www.earlyphotography.co.uk/ Early Photography] | ||
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Revision as of 11:05, 15 May 2011
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The Teleros is a telephoto lens made by Ross of London. It was introduced in the early 1920s, 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.