My bushnell hold's up fairly well in the cold, I think all camera's have a little problem when it gets real cold. I have some Moultrie camera's that really don't like the cold, I think they shut down before you even get out of the woods.The sentry is real easyto get set up, It is password protected so after you put your password in and set the time and date it's ready to go. The next time you use itall you have to do is put in your 4 digit password and it's ready. It comes with some easy instructions, plus they have the instructions on the door of the camera if you forget in the woods. I'm still a beginner and don't have any problems setting it up. So far mine is doing good, some people have had a problem with what they call a sleep mode,I think the flash is a little weak,It will trigger on something at night to far away to see what it is. So far it is better than my moultrie's and the stealth wd2 i had. The good thing is if somebody steals it they can't use it because they don't know your password.