You're right sako, focus is a pain at times, but I now set the camcorder to manual focus and that solves this issue. On measuring the distances in these 3 rabbit shots they were 35yds, 63yds and 75yds respectively (see video on link)
3 Rabbits
Knowing the land I have taken them from further, they didn't appear clear last night, maybe had something to do with the muck that found it's way onto the lens of the camcorder .
I was scanning the ground with a NV Monocular that I bought from Aldi for £69.99, it worked well on it's own up to -100m but when used along with the Deben Tracer Pro Max w