Seeing is believing. This lens goes beyond sharpness. I have five other Sony non-Zeiss lenses for the Nex 6 and Alpha 6000. Whatever the technicalities may be, this lens and its first cousin, the Vario-Tessar 16-70 mm, simply produce more vibrance in the pictures. Without question, you will see that when you try it. I use this lens and the Vario-Tessar 16-70 mm about equally. Of course, it will be difficult to return to lesser lenses afterwards.