Last night is was very dark and we were having some IR issues, but resolved with new battery.
I was intrested to note that when watching a DP in action with IR and I was using a NV Mumm the IR beam is actually square and had a darkend line through the middle in effect a magnified image of the LED, is this normal.
Quite weird to be using all the kit at once, but we did eventually account for a v wary VIXEN !!!!