| Canon EF 800mm f/5.6 L IS USM Specifications | |
| Frame Coverage | 35mm |
| Lens Construction (groups) | 14 |
| Lens Construction (elements) | 18 |
| No. of Diaphragm Blades | 8 |
| Minimum Aperture | 32 |
| Closest Focusing Distance | 6m (19.7') |
| Maximum Magnifcation | .14x |
| Filter Diameter | 52mm (rear gelatin filter) |
| Maximum Diameter x Length | 161mm x 461mm (6.4" x 18.1") |
| Weight | 4500g (158.7oz) |
Reviews
Source
SLRGear.com
The Canon 800mm ƒ/5.6L is the longest lens we've ever tested in the lab, and doing so tested our system to the extreme. That said, there aren't exciting results concerning the sharpness profile of the 800mm ƒ/5.6L, but neither will it disappoint.
Luminous-Landscape.com
If you shoot wildlife or outdoor sports, and are finding that your 500mm or 600mm lens isn't quite long enough, and your bank manager is telling you to spend some $12,000 before the tax man grabs it, then the new Canon 800mm f/5.6L may be just the thing for you.
The-Digital-Picture.com
The 800 L is sharp wide open from corner to corner and slightly sharper stopped down to f/8. The biggest improvement from stopping down is the reduced vignetting, which is somewhat strong at f/5.6. Exposures at f/5.6 are generally at least 1/3 stop darker even in the center of the frame from what f/8 exposures are.
