| 词条 | Canon FL 1200mm lens |
| 释义 |
The Canon FL 1200mm f/11 was a super-telephoto lens marketed by Japanese optical manufacturer Canon in June 1972.[1] It was the longest super-telephoto lens in the Canon FL system.[2] The lens was part of a group of four convertible lenses: 400mm f/8, 600mm f/8, 800mm f/8, and the 1200mm.{{cn|date=August 2014}} The lenses were in two parts: a focusing and aperture control section which mounted directly to the camera using the Canon FL breech-lock bayonet mounting ring; and the head end, which determined the focal length of the lens. The control section was common to each of the four head-end sections. The 1200mm head end was a preset aperture type, so the lens had to be stopped down manually for exposure.{{cn|date=August 2014}} The original FL 1200mm is now a rare and very valuable collector's item. The only known existence of the entire set of the four lenses in this series is in a private collection located in Indiana, USA.{{cn|date=August 2014}} Technical data
References1. ^{{cite web |url=http://global.canon/en/c-museum/product/fl122.html |title=FL1200mm f/11 |website=Canon Camera Museum |accessdate=2016-10-26}} {{photo-stub}}2. ^http://www.mir.com.my/rb/photography/companies/canon/fdresources/fdlenses/1200mm.htm 1 : Canon FL lenses |
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