Summary: I purchased this lens as an upgrade to my Sony 18-70 mm kit lens that came with my Alpha. I am very pleased with quality of pictures I am getting with it. The pictures are sharp at both ends of the zoom range and corner to corner at wide apertures. The colors are rendered a little cool, but nothing which cannot be corrected by post processing.
Excerpt: I have used this lens for nearly an year,and most of my pictures were for travel, and a few closeup macro type shots. I had previously been using a Sony 18-70 mm kit zoom lens, which was satisfactory, both in picture sharpness and colour.However, when I started using the 16-80 lens, first thing I noticed was it's sharpness of image, edge to edge even at wide open apertures.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Nice Bokeh, Strong Construction
Excerpt: This lens functions as my primary lens. For an amateur who is just starting to really get into photography, this lens provides an ideal focal/zoom range. Upgrading to this from the kit lens provides an amazing leap in picture quality. Colors, clarity, and overall sharpness are miles ahead of a kit lens. That being said, the autofocus is somewhat noisy and the aperture craps out at f3.5.
Pros: Consistent Output, Durable, Nice Bokeh, Strong Construction
Summary: This is my first piece of Ziess Glass. now Ziess made the glass I wish they made the entire thing. I agree with other post that when at 16 mm there is quite a bit of lens shadow (vignetting) at the edges of the photo. Zeiss themselves would have made sure that lens was perfect at any focal length. I rated it at a 4 for this reason.
Excerpt: This is my go to lens. Sharp! Great lens Stays on my a77. Landscapes are beautiful, great with grand kids as can stay far enough back so they are natural. Color is superb! There is no purple fringing and distortion is non-existent when using Lightroom with this lens checked. I could not get a better lens with this focal range for the price!
Pros: Color, Consistent Output, Fast / accurate auto-focus, Nice Bokeh, Rugged