Which is which?
Two photos, one taken with the Canon 7D and the other with the A6000 using the Commlite adapter (MF naturally) both using the Sigma 150-600mm C lens. Camera to subject distance is 722 ft as determined by my friend's Nikon rangefinder. Photos are cropped and resized.
The Commlite adapter gave some spurious f-stop readings (although exposure was OK). For example, in one exposure Commlite showed f4.5 reading and in another f2.8 in Lightroom even though the Sigma lens has a maximum f-stop of 6.3 at 600mm. Go figure. Bottom line: as long as exposure is OK it doesn't bother me. Cheep. cheep.