Excerpt: This lens is an upgrade from an EF-S 55-250mm f/4-5.6 IS II and has exceded my expectations. There is clearly a difference in an EF lens versus an EF-S lens in quality of build, quality of 'glass', and features. I especially like the two-mode auto-focus for panning in video mode. Its not an L series lens but it is great value for the price.
Pros: Consistent Output, Easily Interchangeable, Fast / accurate auto-focus, Strong Construction, Two-mode Auto-focus
Very good lens. I find it most useful for sports ...
happy hiker, Amazon
16 January 2015
Summary: Very good lens. I find it most useful for sports photography. The focus is sharp and quick. I use it on my Canon Mark III and I am very happy with the results. For most non pros this is the highest quality you will need.
Excerpt: This 70-300 covers a wide range of focal length at the higher end of the spectrum. As a F/4-5.7 lens it is a seems like a compact and very handy size. It isn't overly large or anything like that. My biggest qualm is that the auto-focus is not up to the level of some of these newer AF systems (Canon 5D Mk3, Canon 7D Mk2). At this point, I cannot attest to duability/construction of the lens. Most lenses like this I've used previously are solid.