Actually 4 feet is ideal LOL. My neighbors fence is that high and he gets great shots of people approaching and is getting full front of faces as opposed to sides, plus if they are looking down it still has a chance at getting their face.
Your pic above is actually still getting a fair amount of IR over the fence, but you can still see how much IR is being lost on the fence. Looks like you still have some tweaking to do on that but much better than I was expecting.
Your pic above is actually still getting a fair amount of IR over the fence, but you can still see how much IR is being lost on the fence. Looks like you still have some tweaking to do on that but much better than I was expecting.