I have just taken the guide 518c out for its first outing after a bit of fiddling around with settings
All i can say is WOW. I could see rabbits crows and pigeons out to approx 150 yards.
Then i came accross two larger heat sources about 600 yards away although at this range i could not identify what animal they were i could see which way they were pointing as the thermal image could pick out the engine room of these animals. As these tests were carried out in the light i had a draw tube swarovski scope with me and the two larger heat sources were Roe Deer.
Iam thinking 1 or 2 more trips in the light then the real test at night, i cant wait!