but a night with the flash you can almost walk through the pic before it flashes.
Just curiously, How far from the "target area" is the cam set up. The sensor puts out a cone shape field. If you're too close to the "target" it may not have time to activate and take the pic.
http://www.stealthcam.net/pdf/manual_digrc-x.pdf
At 15 feet from the target the beam is 13 ft wide. at 30 ft the beam 26 feet wide so being too close may be part of the issue