I just researched it and got the answer, so no worries. If I'm right, the IR will not cause a white flash and without it, there will be a flash and the night time photos will be color. If I am wrong and you know it, please let me know. I don't know how the deer will react to that, I guess i can give it a try tonight. From what I read, the deer notice the IR too and eventually will get use to it or the white flash. I guess my question really was whether or not my camera will work AT NIGHT with the IR off?