I am very pleased with the image quality of the Sigma 60. So far I have used on my Sony 16-50 NEX6. The Sony lens is very good in the area of 16mm to 20mm, since you can save each other Wide. In the area around the 30mm Sony is also good. But then the Sigma is unbeatable. With its 60mm (90mm analog) there is a Always top lens for many photographic situations. Also in Clear Zoom mode (Faktor2) the images are clearly better than the Clear Zoom with the Sony. Whereas you had to say that you can get just as with a crop of a Sony Sigma recording with an image editing program like IrfanView good enlargements, and you can save the Clear Zoom actually.
