For this review, the lens was tested on a Panasonic Lumix G9 using Imatest. Distortion is amazingly low and it is quite likely that here too there are corrections being made that we cannot switch off.

The taller the column, the better the lens performance. For this review, the lens was tested on a Panasonic Lumix G9 using Imatest. CA (Chromatic Aberration) is very well controlled centrally ...