Summary: Just got back from a vacation that included Yosemitie National Park and Sanfrancisco. Great Photos, and still learning how to take advantage of this great lens. Make sure your tripod can handle this glass lens.
Summary: I am using this with a amount to emount adaptor, so am relying on manual focus more than usual for me. The manual focus is excellent (not too loose) and the lens quality also excellent. Look for a refurb (I did). And note - there is a new version, marked with II.
Excerpt: I love nature photography and this lens is a wonderful addition to my kit. The SSM technology is really great. I have the Sony a77ii with APS-C sensor, so I have a little longer reach when I am fully zoomed in to my subject.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Strong Construction
Excerpt: Had to return due to a peace being loose. But I did get to take a couple pictures with it & they looked great. A little soft at full zoom & was a bit heaver them my Tamron 18-270. But over all could be a bit better for the price.