Excerpt: I've only had it for a few weeks, so still getting to know the lens a bit, but its not looking like a steep learning curve. Does a great job. It's a very solid build and love the compact size but its big on quality photos. I've got this paired with a 70D, and quite happy with that combo. This is a move up for me from the non-L 70-300IS USM. Literally from day one and my first few shots I saw a huge difference in the quality of photos.
Pros: Consistent Output, Fast / accurate auto-focus, Great For Handheld, Rugged, Sharp, Strong Construction
Excerpt: I do mostly nature, bird photography. This lens fast autofocus is great for capturing birds in flight coupled with my 7D. If it had a constant f4 aperture like my 70-200 f4 L IS I would give it 5 stars.
Pros: Brilliant Pictures, Consistent Output, Durable, Fast / accurate auto-focus
Excerpt: I am still pretty much a novice photography and was inspired to take back up a hobby a enjoyed awhile ago. My kids are of the age that they are getting more into sports and my "regular" lens just wasn't cutting it. This lens is compact enough that I don't feel like I look out of place on the side lines but has enough zoom to get me close to the action. The image stabilization and autofocus have been smooth.
Pros: Easily Interchangeable, Fast / accurate auto-focus
Excerpt: Last fall, I upgraded from a 7D with a 28 – 135mm lens I used most of the time, to a 5D Mark III with a 24 – 105mm lens – my first L lens. Quickly, I learned I often needed more reach, for "walking around" shots I like. I considered the 70 -200mm 2.8f, because I was unsure about 4f-5.6f for the 70 – 300 mm. When I satisfied myself the 5D Mark III produces good quality for my purposes by increasing the ISO, I decided the additional 100 mm was a good tradeoff for me.
Excerpt: I bought this lens to be used on my second camera so I am ready for those shot where subjects are to close for my 400mm 2.8L. When you hold this lens in you hands, you know it is a high quality Canon L series lens. Subjects look bright through the lens, auot focus is fast and images are sharp. Only drawback is it comes without a tripod mount collar and that it's not F4.0 thru the lens. It's still a new lens but so far I am very happy and it met all my expectations.
Pros: Fast / accurate auto-focus, Rugged, Strong Construction