Thanks we kind of have a one size fits all mentality around here lol. We use a lot of utility poles cut down to length for fence post. It’s better to go big then to find out the pole was the weak link.The pole is not needed just makes camera mounting nice and bridge mounting easy and sturdy in winds. A nice 4x4 or 6x6 of a good length works well also. A ladder will get you up to the height you need to get over say fence brush ect. The height also makes it harder to block the beam with a garbage can lid van or tractor.
Take high camera placement like using tree stand hunting. You get a nice angle on distance mounting high. Facial recognition is harder but we are not worried about that here. Lower camera placement makes it easier to move the camera away from the object on protection also. The lens matters but more if you are into photography that watching a field of cows