Beyond the case, I would recommend a lanyard of some sort to either have around your neck or around your pack. My camera is just a little point-n-shoot, and I have a lanyard attached to the wrist strap, which I then wrap around the bottom of the shoulder strap of my pack. While I sometimes get a bit tangled up

if I drop the camera, I know it's not going to end up at the bottom of some chute! And yes, I have dropped it a few times since having the lanyard!
California Trailwalker has a pretty good story about losing a camera at the wrong time (I tried to search for it but not having much luck!).
-L
