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| EF 1200mm f/5.6L USM | |
| Key features | |
|---|---|
| Maker: | Canon |
| Image stabilization: |  No |
| Ultrasonic motor: |  Yes |
| Application: | Super Telephoto |
| Technical data | |
| Type: | Prime |
| Focal length: | 1200mm |
| Aperture (max/min): | f/5.6 - f/32 |
| Construction: | 10 groups / 13 elements |
| # Diaphragm blades: | 8 |
| Close focus distance: | 45.9'/14m |
| Max. magnification: | 1:11.1 |
| Physical | |
| Max. diameter: | 8.9"/22.8cm |
| Max. length: | 32.9"/83.6cm |
| Weight: | 36.37lbs/16.5kg |
| Filter diameter: | 48mm (drop-in) |
| Accessories | |
| Lens hood: | Built-In |
| Case: | Exclusive |
| Angle of view | |
| Horizontal: | 1°45' |
| Vertical: | 1°10' |
| Diagonal: | 2°05' |
| History | |
| Introduced: | July 1993 |
| Retail info | |
| MSRP US$ | $89,579 |
The EF 1200mm f/5.6L USM was a super-telephoto prime lens made by Canon Inc. It uses an EF mount, and is compatible with the Canon EOS camera range. When used on a 35 mm film camera, or a digital body with a full frame sensor, it has a field of view of 1200mm. When used on a digital body with a crop factor of 1.6x, such as a Canon EOS 40D or 450D, it provides a 35mm field of view equivalent of a 1920mm. With a 1.3x body, such as a Canon EOS-1D Mark III, the field of view is equivalent to 1560mm.
The lens was aimed at sports and wildlife photographers, and is both relatively expensive and extremely rare. Canon described it as "the world’s largest interchangeable SLR AF lens, in terms of both focal length and maximum aperture."1
Technical information
The EF 1200mm f/5.6L USM is a professional L series lens, that is now discontinued.2 This lens is constructed with a metal body and mount, and with plastic extremities and switches. The features of this lens are: a wide rubber focus ring that is damped, a distance window with infrared index, the ability to limit the focus range, a focus-preset mechanism, and the ability to set the AF speed. An 8 blade, maximum aperture of f/5.6, gives this lens the ability to create depth of field effects. The optical construction of this lens contains 13 lens elements, including two large fluorite lens elements. This lens uses an inner focusing system, powered by a ring type USM motor. Manual focusing is rendered by wire, this lens does not have a direct mechanical connection to the focusing ring, therefore this lens does not have FTM (full time manual) focusing mode. The manual focus speed is adjustable: 1 = 1/2 standard (for precision), 2 = standard and 3 = 2x standard (for fast-moving subjects). The front of the lens does not rotate nor extend when focusing. This lens does not have a typical rotating tripod mount like other telephoto lenses. However the lens mount can be rotated and locked, allowing the lens to be used in horizontal and vertical shot formats. This lens is compatible with the Canon Extender EF teleconverters.
This lens comes with its own heavy-duty tripod and case, and was built only by special order.
Few of these lenses exist; Sports Illustrated magazine owns two of them, as does Canon Professional Services and James Jannard, the billionaire founder of Oakley.
Notes and references
- ^ Canon Europe product page
- ^ ""Canon Hongkong Co. Ltd - discontinued products page for 2005"". Canon Hongkong Co. Ltd. (2006). Retrieved on 2008-10-08.
External links
- Canon Europe - EF 1200mm f/5.6L USM
- Canon Museum - EF 1200mm f/5.6L USM Block diagram
- The lens in action
- Canon HK - discontinued info page
- The 1984 FD mount prototype
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Wikipedia content modification information:
- This page was last modified on 15 December 2008, at 04:23.
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