When mounted on a Sony NEX-7, the Sigma 60mm performs very well indeed, achieving a very respectable DxOMark Lens Score of 23. In fact, that’s the best result we’ve seen for a Sony E mount lens. The Sharpness score is high (at 16P-Mpix), due, not only the high levels but also to the uniformity across the field (measured at less than 7% variance across the frame). Distortion and vignetting are well within what’s expected with a lens like this (with a modest maximum aperture) and so to is chromatic aberration; in fact, it is very low.
As with NEX mount iteration, the MFT version is very sharp and consistently so across the frame. Some slight differences can be noticed on the test bench though. Transmission isn’t quite so disparate from the maximum aperture as it was with the NEX lens, and vignetting is lower, though this is well controlled in both. Chromatic aberration is higher on the GH-2 but barely noticeable in real world images.