Summary: I think I have made a discovery more important than Columbus. Because of this super telephoto lens, I was able to discover life on the Sun! One reason no one ever look was because the sun is too bright. Well, I found an easy way around the problem.
Summary: I picked up this bad boy last month to take photos of my cat, and by golly the quality of the pictures were outstanding! He's a silver mained coon tabby, and I wasn't going to mess around with your regular 55mm lens on a beautiful cat like that, No sir.
Excerpt: This lens is very well made, like other L-series Canons... Even with extender 1.4x III, the sharpness and quality is remarkable. Yet to find a light-but-stable stand to carry this lens and camera body around...
Summary: It's somewhat hilarious just how oversized this lens is. I suppose I can almost understand how it might get mistaken for a piece of armament from a distance. Even hanging a not insubstantial 1D off of it makes it very clear where the balance of power is in this relationship--the lens has it all,...
Conclusion: I got this lens as a gift from my mother. It is the best gift ever. It is very heavy and you need a tripod to use with it. I tried using a mono-pod, but had better results/luck on a tripod. I am not sure Arnold Schwarzenegger could hand-hold this one for long, even in his youth!
Conclusion: Resolution has always been my highest priority and this lens certainly is the best. The auto-focus features are superb. After using the 600mm f/4 L lens for years trading it in for the 800 was the best trade I've ever made.
Pros: Fast auto-focus, Superior build quality, Super-sharp images
Excerpt: I wasn't sure whether this lens will be travel friendly. However, it wasn't bad at all. Auto focus is superb as well the image quality. I recommend this lens if you are serious bird photographer
Pros: Consistent Output, Fast / accurate auto-focus, Rugged
Summary: I have owned this lens for about three months now, and all I can say that NO other lens will even comes close to beating the picture quality of this lens. I have tried the new 600mm f4 ii of canon.