The taller the column, the better the lens performance. CA (Chromatic Aberration) is measured with in-camera corrections switched off, as far as we can know anyway. CA is so low it is almost ...
For this review, the lens was tested on a Nikon Z7 II using Imatest. Distortion measures -2.0% barrel, which is definitely noticeable on, for example, architectural subjects near the image edges.