These tests were carried out at UWE, The University of the West of England in Bristol on the 24th & 25th January 2015.
The exposure series here stops at minus 3 stops, this is because we were unable to get a camera from BM and had to make other arrangements. This meant an Ursa with an EF mount not a PL, this forced us to use a Canon stills lens instead of the Cooke 5i that we were suing for everything else. The Canon stopped at 16 where the Cooke went to 22.
BM can't say I didn't warn them...
The cameras sensitivity is not stated by the manufacturer but 400 ISO is the middle of it's range, the daylight exposures are all based on lighting for 400 ISO, unfortunately for tungsten we only had time to shoot at one light level and as most cameras were 800 ISO that is the level they were shot at, this is why the first reference frame is at +1 stop as this is very near "correct" exposure.
As usual right click on the exposure series for a HD res DPX file.