I have been doing a trail cam study for about a year now.

I have found out that if you put a IR cam up a tree about 8 to 10 foot off the ground that it won't spook deer.Well low and behold it works but you have to angle it down towards the ground before it will trigger thou.

but i got over 400 pictures within 2 months on one camera but anyway here is a picture of my camera to show you how far off the ground i got mine and it's working like a charm and not spooking the deer.