Summary: On the A58 the pictures are clear and sharp. I've been using mine mainly for outdoor sports, something that was specifically said to be something this lens isn't suited to in professional reviews. In my experience, it's a great lens for that purpose. The quick AF and wide range with a long zoom work fine. Maybe using the newer A58 camera helps over older models with this lens.
Summary: I'd been wanting to try this lens for a while as I have quite a decent range of A Mount lenses (around a dozen or so) One area I don't really have well covered is the telephoto end and at the 300mm mark. Though I've used a fair few of them On using the lens first off the build is very much like the recent Sony 18-135mm which is quite a good thing as I'm quite fond of that lens.
Summary: I am very pleased with this lens. I am not a serious photographer but have been taking pix for 50 years with all types of cameras and lenses. Using it on a Sony Alpha A77 it has been just fine. It seems fairly "small" for a 300mm zoom, but the camera is big and it all balances nicely making for pretty good hand held shots. Twisting the barrel to zoom is not buttery smooth so I gave it 4 stars. It's not stiff, just a bit variable. It's a good lens for a good price.
Summary: Wow... I have kit lens 18-55mm, in my Alpha A77..Now I buy this lens and cant belive that is so big difference...! Im Speechless. Cant belive that is big different... Picture are cristal, great focusing, perfect quiet... Just love it....
Excerpt: I use this lens only when I need it to get in closer than I can with my other lenses. The few times that i have used it it has performed well. As with all telephoto zoom work you should use a tripod for rock solid stability and clairty of image focus. I use this with the A77 and the in camera image stabilty works well with this lens even in hand held situations.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Nice Bokeh