Field mice camera
Several years ago I set a camera out for field mice and was well pleased with the results, so I built a camera that I hope works as well for close pictures of a fast critter. I used an older Olympus 380 that has a switch on the front for macro up close and is a quick camera. It does well on pictures at less than a foot and hope the flash isn't to much for that distance.
More or less a trial and error method for the first few weeks and hope the elk don't stomp the camera into the ground, they are very rough on cameras.
It's a well used trail that runs in a zig zag pattern in front of the camera. That should slow anything down for the camera to work, but I can always go back to the first camera I used in a pinch.