Summary: I got this lens as a promotion for the purchase of a Sony A99. I am new to FF photography and didn't know what I was really getting, although for the price it should be a decent lens. Well as it turns out it is a very decent lens. According to all the lens reviews it doesn't get a very high grade, but they are wrong. Listening to the experts, I decided to upgrade to a Zeiss 24-70mm lens, which gets substantially better reviews.
Summary: A very quiet, well designed lens. It has become my go to lens for most applications. Great in low light and small spaces. The only drawback is the price...there are other lenses with similar features for much less. But if you are looking for a rugged, well made lens, this is the one!
Summary: A very good travel lens on FF, excellent sharpness at center at all apertures, but somehow soft on edges, very soft at wide apertures, a bit less when stopped down. Color rendition is excellent, has a very good flare control, but vignetting is apparent (though fixable with processing). If you need to take just one lens for a trip, then this is quite a good choice.
Pros: Nice range for FF, very sharp at center, accurate focus, good flare control
Cons: Very soft at edges, Price, no sealing, slight vignet
Summary: I bought a99 and this lens back in December and got the camera in 2 days. According to the shipping date i was suppose to get the lens on Dec 18, then it changed to Dec 28th. Finally i got my lens Feb 23rd, yes talk about luck.....I am an amateur and this is my first ever camera and lens combination. So far i am impressed with the picture quality.
Pros: Price, Picture quality, great alternate for Zeiss
Excerpt: Just an excellant all round lens which could have been made better if the focus was quite. When you pay $ for a lens, you do not expect to hear the lens focus noise. Nice compact lightweight design.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Nice Bokeh, Rugged, Strong Construction