Well they are quite consistant... Outdoors, 0 MA at any distance near to far. In artificial and mixed lighting though, it was closer to 10MA.... Usually it was fine at one or the other, but in more mixed settings it became a pain. It would fall somewhere in the middle for example. Always had to change it when indoors and the type of light.
Never had that issue with the 85 1.8, 35L, 85L, 135L or any Canon prime in similar conditions FWIW... So it was not my body or anything.
I heard somebody say they got this issue corrected when sent to Sigma, so maybe there is hope... But until it is fixed for sure, I will hold off
By far the sharpest 1.4 or 1.2 prime wide open I had ever seen though. Beautiful lens.