I tend to switch the camera off between shots to conserve battery power. However, as an electronics engineer, I know the worst thing you can do to electronics (particularly the camera's internal power regulator and associated components) is to switch it on and off repeatedly. If anything is going to die, it's the initial stress at switch on that's going to kill it. I reason with myself that Olympus and other manufacturers have a soft start, and have designed and type proven it for a large number of power cycles, one after the other. Any thoughts from others? Do you leave the camera on and let it 'sleep' between shots, or switch off as I do?