My 50APO for E-mount is round at 2, 2.8 and 16.
My 35APO for E-mount is round at 2, 2.8, 5.6 and 16.
My 35APO for M-mount is round at 2, 2.8, 5.6 and 16.
Never had 35APO for E and M side by side and just realized that these are quite different mechanically and size wise. M version is more pleasing in hand, aperture is half-step compared to one third step on E version.