There is a major problem using a timer....Wildlife doesn't wait for timers by the time the timer ticks down it has either walked off the frame or stopped doing what you wanted to capture in the first place...Shooting Scenery sure this might work,,,But try catching a Red Tail hawk swooping down to get a cottontail or field mouse with a timer!!! Not gonna happen....And trying to hold a cable release or infared trigger in one hand and steadying a 8 lb plus camera on a monopod in the other doesn't either.....