As wary as whitetail deer are, it's interesting that the animal didn't run immediately after being surprised by the click and flash of a camera in the middle of a dark swamp at night, in an area where people seldom go even during the daylight hours.
When set to take still photographs, the Primos Truth Cam 35 wildlife camera is set to take a series of five photos in rapid succession when triggered by a combination of movement and body heat. When using flash as opposed to infrared, the camera will flash each time a photo is taken, and it also produces an audible click. So when this whitetail deer triggered the camera, it was confronted with five quick flashes of the camera, accompanied by as many clicks.
Yet, the deer is not frightened off. Rather, it appears alert but mostly curious. This has been my experience with the camera. While at first, I viewed the audible clicks as a negative in wildlife photography, the results have to encourage the animal to look into the camera, even to approach more closely.