Summary: I decided to try this instead of the Canon 70-300 USM lens, for my new zoom lens. I love it !! It is huge and heavy - but I knew that going in and I don't mind carrying it. I don't like tri pods - and this guys works great hand held on my 7D. I use it so I can take candid's of my kids without them knowing - else they don't make a natural face. I LOVE IT - and ebay allowed me to find it and a great used price.
Great for a day light shooting and still photography
Christopher Holt, Amazon
25 October 2014
Summary: Great for still shots in daylight shooting, However I purchase this lens to shoot night time football action where the lighting in high school sports aren't that great. the f/4-56 just doesn't let enough light in.
Summary: I wad wanted the Canon 100-400 L for years but bought this one at about half the price. I am very pleased with the lens and really can not tell any difference between this and the Canon I borrowed from my friend on many occasions. Focus and IS are great. I had a 70-300 4-5.6 and there is no comparison. The lens is heavy but with it comes crystal clear images. The L is great but is it twice as great? Not to me.
Summary: When I first received the lens I was surprised to see that it was so BIG and heavy!! But after a couple of days handling it, I managed to get use to it's heft! I am very pleased with the results I have had so far. Very clear and sharp photos. I haven't been able to use it much to date, but I did get some great photos on a day at a wildlife reserve of Great Egrets and Cedar Waxwings.
Excerpt: I was looking to get the same the of product but in Canon. After reading reviews and opiniond from pros, i bought this lens at significant lower cost. I am a normal person who loves photography. I am super happy with the lens. Yes it is heavy. And shooting on rainy or dark days is a challenge.
Summary: Outstanding lens, heavy, yes, but not too bad. ...sharp throughout it's range and easy to focus. I bought this to replace my first one which was stolen, and am glad I did. It's already given me some excellent images.
Summary: Love it! I photograph birds and whales with it on a Sony A65. A little slow on autofoscus, and will not focus fast enough after 300mm, but manual can work just as well or better. It's a big lens, and that is to be expected of big lenses.