Excerpt: I use it with the Sony NEX-FS700 camera. This is great for light light situations and testimonials. The pictures come out crisp and it was easy to change. I keep the Alpha mount connected to the lens so it's real easy to get on and off. When using auto focus there is a semi loud clicking noise that's pretty annoying. In situations where you might be captuing audio in a realtively quiet place just turn off the auto-focus.
Pros: Durable, Easily Interchangeable, Good in low light, Rugged
Summary: Haven't had this for long, and bought a used copy as well (not thru Amazon - sorry guys!). Bought for use with an A55 to replace my current Sigma 17-70mm (the old style, non-HSM motor version) with which I just was underwhelmed due to a slight softness. This lens is FAST to focus and is near as I can tell SILENT. Honestly, you half-shutter press and it's just THERE. Initial inspection of test shots indicates its sharper too.
Summary: If you are not a pro photographer, this lens may be overkill, especially for the price. By "pro" I mean a working photographer who gets paid. I have taken this lens on an overseas vacation trip. Honestly, for vacation type shots where you are spending time with the family, I would recommend something that is lighter, more compact, and doesn't require as much of your attention. In the back of my mind, I was always on the lookout for would-be thieves on the city streets.
Pros: The images are excellent throughout the zoom range and aperture range. The typical Carl Zeiss micro contrast gives the images that "pop".
Cons: High quality glass will always be heavy and maybe cumbersome, but this is the only negative that comes to mind. Keep in mind that I don't do lab testing on my lenses. This is purely based on viewing my images on screen and also viewing my prints. My reason for 4 stars: price.
Excerpt: sharp, fast lens. A little heavy, but image is superb. I got this to use with Sony FS-100 and they have not yet worked out the a-mount to e-mount communication fully, so the iris jumps wide open, then closes as you open up. fine to adjust iris between shots, not while shooting video.
Excerpt: I'm an amateur photographer of 20+ years, starting with 35mm film and now enjoying the benefits of digital. My experience is based on owning Minolta and now Sony SLR/DSLR gear. I currently shoot with an a700 and a900 with various old and new lenses. This lens is silent and fast focusing, but not lighting fast. Definitely faster than most of my screwmount zooms, especially the KM 28-75mm. Low-light focusing is very good with the a900 firmware v2.
Pros: Consistent Output, Nice Bokeh, Sharpness and Contrast, Strong Construction
Excerpt: Excellent image quality except for full frame corners at wider angles and larger apertures (I use it on A900). That does not really bother me but may be an issue for others. Otherwise it is tack sharp under most normal use conditions. I use it mainly for landscape at f5.6 or smaller. Beautiful colors and not much CA. I also like its zoom range. Focus is fast and accurate. It is, of course, big and heavy. But I knew that going in. I use a harness instead of the strap.
Pros: Consistent Output, Durable, Fast / accurate auto-focus, Strong Construction