YBH, Thanks. No, I am not missing much in terms of bokeh.
Yes (LCT), it was taken at f/0.95. I did check the light transmission of this lens and it is a f/0.95 (Angenieux have engraved the T-stops as well, it is T/1).
Because of the negative curvature of the images from this lens, if the focus is achieved (and the main subject is focused properly taking into account the light fall off), I get shots that I can live with.
It is not the sensor size. Even at f/3.5 9similar magnifications), with a flat field lens, I get more "bokeh".:ROTFL: