This is the longest telephoto lens among Canon's lineup, and a terrific choice for any long-distance application-outdoor sports, wildlife, news photojournalism, and so on. It's actually lighter than Canon's EF 600mm f/4L IS lens, weighing just under 10 lbs. It uses a refined optical design, with two fluorite lens elements, one UD element, and one Super-UD-glass element, for outstanding correction of color fringing and superb contrast and sharpness. This super-telephoto lens uses magnesium-alloy barrel construction to enhance its light weight, and has weather-resistant gaskets throughout for use in harsh conditions. It's compatible with both the EF 1.4x II and 2x II tele extenders for even more reach: EOS cameras with 45 AF points will continue to provide autofocus at the center AF point when the lens is used with the 1.4x extender. Finally, it's image stabilized, providing up to 4 stops of correction for camera shake. This makes it even more practical in many situations.
Wow whatta lens
I am a very armature photographer and the shot's I got with this lens makes me look like a pro.
December 4, 2013
ITS GREAT...I LOVE IT... ITS GREAT FOR SPORTS OR TRAVELING
June 21, 2013
I have been taking wild life photos for 30 years with canon lenses and the new 800 is a great improvment over the old FD 800 , if the picture is a thousand word it speeks for it self
December 20, 2012
I finally got my 800mm after waiting for one to be built for me. 3 months wait, but it was worth it. I bought this lens to photograph eagles this upcoming winter, but have shot pics of the moon with a 2x and a 7d (2560mm), man what unbelievable pictures. With this set up, you can just barely get the whole moon in the shot. Craters and seas jump right out at you. I would strongly suggest a gimball head set up. I am using an Induro set up, and love it. My Monfrotto ball head would support it ok, but when you losen it up to move it, you better have a good grip on the lens. I am so impressed with the quickness of the autofocus on this lense with out the 2x. It is as fast as any of my other L series lenses, and I own quite a few, and faster than my older ones. All in all, if you are looking for a fantastic super telephoto with unbelievable quality and speed, this is the lens. You may have to trade your first born for it, but it might be worth it.
October 19, 2010