The Canon EF 800mm f/5.6L IS USM lens is among Canon's top of the line lenses, as indicated by the slightly steep price. It is also the longest telephoto lens that Canon has ever produced, which makes it suitable for long-distance and outdoor photography.
Exterior-wise, the Canon EF 800mm f/5.6L IS USM is suitably big and a bit on the heavier side. However, that's to be expected given the exceptional quality of the lens. It measures 6.4" x 18" and weighs 9.9 lbs. The use of magnesium alloy in the body construction helps keep the weight down.
Being one of Canon's most expensive offerings, the Canon EF 800mm f/5.6L IS USM Lens does live up to its price tag. It offers a terrific image quality and has an excellent build quality.
You can expect the lens to deliver sharp images as well. There's only a hint of aberration and distortion, while flare is well-controlled. As for color and contrast, there's no questioning the excellent quality. The Canon EF 800mm f/5.6L IS USM Lens really is the top of the line when it comes to image quality.
The lens is equipped with an exceptionally fast and accurate autofocus powered by the Ring Ultrasonic Motor (USM). There's also Full Time Manual Focusing, a Focus Preset feature, and autofocus stop buttons.
