People talk of good portrait lenses, but usually forget about good portrait cameras.
My Bronica SQ-A is a great camera, but not a great portrait camera. Unless used in a studio, on a tripod, with the mirror locked up and with your eyes on the model rather than in the viewfinder, what happens in practice is that the Earth-shattering mirror scares the model – who closes the eyes – and that you cannot verify this because the mirror locks you out of the image.
From this point of view, the Mamiyas C220 and C330 are much better – no mirror noise and no mirror black out.
This said, these two portrais of Misha were shot with the Bronica SQ-A.