Sigma 800mm F5.6 APO Ultra Telephoto
Launched February 1991
800mm F5.6 APO EX DG/HSM
Fast maximum aperture 800mm ultra telephoto lens optimised for digital SLR cameras.
Two Extraordinary Low Dispersion (ELD) glass elements produce excellent image quality.
Accepts APO EX Tele-Converters. The lens can be used as a 1600mm ultra-telephoto lens when used with the 2X APO EX Tele-Converter.
New multi layer lens coating is very effective with digital cameras, minimises flare and ghost.
This ultra-telephoto lens is designed to optimize the characteristics of digital SLR cameras and features a new multi layer lens coating.
Incorporating two Extraordinary Low Dispersion glass elements to reduce chromatic aberration to a minimum and ensure sharp, quality images. The overall length of the lens does not change during focusing, ensuring convenient handling and ease of use. The Hyper Sonic Motor (HSM) ensures an ultra-quiet, high-speed AF function as well as full-time manual focusing capability for Sigma, Canon, and Nikon mount lenses. A 46mm filter can be inserted near the rear of the lens, and a circular polarising filter can be used in situ.
By adding a 1.4x EX APO teleconverter (optional extra), you can use this lens as a 1120mm F8 MF ultra-telephoto lens or as a 1600mm F11 MF ultra-telephoto lens with a 2.0x EX APO teleconverter.
| Specifications | |
| Construction | 12 Elements in 9 Groups |
| Focal Length | 800mm |
| Maximum Aperture | ƒ5.6 |
| Minimum Aperture | ƒ32 |
| Field of View | 5° |
| Minimum Focus Distance | 700cm |
| Number of blades | 9 |
| Maximum Magnification | 1:8.8 |
| Zooming System | N/A |
| Filter Size | 46mm (drop-in type) |
| Diameter | 156.5mm |
| Length | 521mm |
| Weight | 4900g |
| SRP at launch: | £4499.99 |
| Available Mounts: | Sigma AF, Canon AF, Nikon AF, Pentax, Minolta |