The Canon FL 1200mm f/11 was a super-telephoto lens marketed by Japanese optical manufacturer

Canon Canon or Canons may refer to: Arts and entertainment * Canon (fiction), the conceptual material accepted as official in a fictional universe by its fan base * Literary canon, an accepted body of works considered as high culture ** Western ca ...

in June 1972. It was the longest super-telephoto lens in the

Canon FL Canon FL refers to a lens mount standard for 35mm single-lens reflex cameras from Canon. It was introduced in April 1964 with the Canon FX camera, replacing the previous Canon R lens mount. The FL mount was in turn replaced in 1971 by the Ca ...

system. The lens was part of a group of four

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es: 400mm f/5.6, 600mm f/5.6, 800mm f/8, and the 1200mm f/11.See description text in https://global.canon/en/c-museum/product/fl121.html and note identical rear section in the documentation picture in https://global.canon/en/c-museum/product/fl122.html 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. 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 Pennsylvania, USA.

Technical data

*Lens construction: 7 elements in 5 groups * *Weight: 6200g/14000g (with case) *Focus adjustment: Manual focus *Aperture range: f/11-64 *Closest focusing distance: 40m / 131ft *Filter size: 48mm (rear drop-in)

References

1200mm lens {{photo-stub