The EF 70-300mm f/4-5.6 IS USM telephoto zoom lens has been developed to meet the high-performance standards that today's photographers demand. Improved Image Stabilizer Technology provides up to three stops of "shake" correction, and the "Mode 2" option stabilizes images while panning with a moving subject. Compared to the original Canon EF 75-300mm IS zoom lens, this telephoto lens has faster autofocus, and overall the lens is lighter and has a smaller diameter than the original. The zoom ring can be locked at the 70mm position, making this powerful lens easy to transport, too.
40Image Stabilizer technology provides up to 3 stops of shake correction
The "Mode 2" option stabilizes images while panning with a moving subject
Faster autofocus than the Canon EF 75-300mm IS
Zoom lock button keeps lens secure when not in use
Pros: Fast auto-focus, Super-sharp images, compact and light weight
love the focal range,my most used lens! takes good indoor pics with low light and hand held.took some pics of seagulls flying and fishing at local pond and got some tack sharp images at all focal lengths! even 300mm looks sharp with 100% crops! works great with my 7d! great all around lens! only negative is focus ring a little loose but decided to go with image quality and not build quality.not L class build quality but image quality looks L class for a fraction of the cost.compact and light weight brings me out to 480mm with my 1.6 crop on my 7d. love it!
Pros: sharp images, image stablization, great value
Cons: loud image stablization
Smartest lens by far in the price range. Delivers very sharp images. Find myself shooting with this more than any other lens. About the only gripe is the noisy IS - you basically have unusable audio when shooting video unless you use an external mic.
My wife bought me this lens as a gift and it is nicely assembled and very easy to carry around. My challenge with the lens was I started surfing the net and reviewing reviews and determined it would be too slow for my goals of shooting low-light cathedrals in Europe. I didn't have the heart to take it back and I am glad I didn't, my wife uses it for her daughter's soccer pics on my back-up body (60D). I am ridiculously spoiled with a 70-200 F2.8...
My Dad bought this lens for me for my birthday since he had one and i had enjoyed it. I use it mostly for sports photos and wildlife. It does a great job and i couldn't be any happier. The only downfall for the lens was that it was a little expensive. The lens hood was also a little expensive but over all i am very happy about it.