Comments about Canon Canon EF 800mm f/5.6L IS USM Image Stabilizer AutoFocus Super Telephoto Zoom Lens:

Great with the 1DMkIV. This combo allows captures I would not have previously been able to capture, particularly birds in flight.

Comments about Canon Canon EF 800mm f/5.6L IS USM Image Stabilizer AutoFocus Super Telephoto Zoom Lens:

I have been using 600 and 800mm lens for about 30 some years , Canon glass is hard to beat

Comments about Canon Canon EF 800mm f/5.6L IS USM Image Stabilizer AutoFocus Super Telephoto Zoom Lens:

This lens exhibits superior picture quality and is thorough sharp without any chromatic aberration. It's not cheap but it's worth every penny! Simply a "must have" for an enthusiastic wildlife photographer.
The built-in image stabilizer provides
sufficient support for excellent picture quality without using a tripod. However, I recommend the usage of a gimbal head to make this lens virtually weightless.

Comments about Canon Canon EF 800mm f/5.6L IS USM Image Stabilizer AutoFocus Super Telephoto Zoom Lens:

This lens while expensive is unbelievable for wildlife. It is fast and incredibly sharp at its maximum aperture of 5.6. Amazing if you have the bucks.

Comments about Canon Canon EF 800mm f/5.6L IS USM Image Stabilizer AutoFocus Super Telephoto Zoom Lens:

I bought this lens for bird photography and use it on my Canon 7D which is a great combo. Before I was using a 500mm f4 IS with a 1.4 extender. I hand carry using a sling made by Blackrapid[@]which screws into the tripod foot and allows me to center the weight across my shoulder with the lens upside down. This allows me to hold the foot like a big handle which takes some of the weight off and keep it from swinging as I walk. I like the 800mm reach without having to use the extender on my 500mm but this adds a couple of lbs and I've lost 3' of focus (16 vs 19). Bottom line, the quality of my shots have improved and I have adjusted to carrying the weight and now carry a 2nd 7D with a 100-400mm zoom for close up shots when they present themselves. At age 62, I was worried that the extra couple of lbs would be a big negative. I do feel the extra lbs but really only notice when rotating to shoot vertically. Lastly, while a tripod would no doubt give more reliable results, I find that hand carrying is the only way to go when practicing my bird photography. Being able to walk and almost instantly swing into action is the only way to take the action to the birds as opposed to setting up in a static manner and hope that they come to you.

Comments about Canon Canon EF 800mm f/5.6L IS USM Image Stabilizer AutoFocus Super Telephoto Zoom Lens:

Shoot it on a bean bag, lay it on a fencepost in a pinch. It is all sharp. It is the the most amazing piece of glass I have ever seen. In 5 months, the shots from this lens have eclipsed all before. It is great for very shy animals like wolves and birds. I can't wait to try it with an extension tube. The 7D is made for this lens.

Comments about Canon Canon EF 800mm f/5.6L IS USM Image Stabilizer AutoFocus Super Telephoto Zoom Lens:

Never bye nothing better

Comments about Canon Canon EF 800mm f/5.6L IS USM Image Stabilizer AutoFocus Super Telephoto Zoom Lens:

Beautiful piece of equipment, both functionally and physically.Had the 500mm f/4.0 IS lens and must admit it was and is a great lens with spectacular I.Q.I found I needed more reach and didn't want to keep attatching and removing my 1.4 and 2x extenders in the field.This lens gives me the reach I desire without sacrificing any image degradation that might be caused by the use of extenders.With this bare lens and drop-in circular polarizer the sunrise, daytime and sunset images are stunning.Shy birds and wildlife are no longer frightened away by trying to get closer to them while more docile subjects can be framed and shot up close with gorgeous background blur.This lens, even though it is 9.9 lbs., doesn't feel much heavier to carry around than the 500mm did.I have it mounted on a Canon 5D Mark II, Wimberley 200 II gimbal head and an Induro 414A tripod. This set-up renders the lens and camera virtually weightless. I know I've found the lens that I will be most using for a long time[...]

Comments about Canon Canon EF 800mm f/5.6L IS USM Image Stabilizer AutoFocus Super Telephoto Zoom Lens:

Finally attained my ultimate dream lens.I've only had it for a while and still in the get aquainted stage, but the features such as fast auto focus and image stabilization are incredible.Much lighter in weight than expected.I have it mounted on a Canon 50D right now and getting super long range results even wide open.The set-up is mounted on a Wimberley II gimbal head and seems almost weightless during use.Very expensive I'll admit, but no regrets.[...]