We finally just put it out the other day because i had been reading it would read a temp. difference before it takes the picture. So we decided just to try it. I went back last evening to check my feeder & there was a big bore walking up to my feeder right as he got up there to it the camera flased & took a picture & while he was looking towards the flash I got a good shot at him. He dressed out at about 175 or 200 lbs. Thanks for the reply though.