ACT and the EMI 2001/1. As supplied by EMI the 2001 and the later 2001/1 did not have any form of ACT (anti comet tail) or HOP (highlight overload protection). This is why its performance was poor, in this respect, when compared with the next generation of cameras supplied in the 1970s. None of the first generation of true broadcast cameras in the middle to late 1960’s had ACT, so the EMI 2001 was not unusual.