It was already mentioned but I had to toss in that Ive ruined three, as follows: I found the PERFECT place to shoot in the mountains. Hours drive up, setup, wait. I did just that days later. Got the most BEAUTIFUL sunset. Click...no cf card. Yeah. Next, I told myself "I havent used my camera much so the battery's fully charged. No need to take the charger (small weekend vacation). Left said camera on all day. Dead battery for model. Yeah. Lastly, waiting for an eagle to take off. I was going to outwait him no matter what. Waited nearly an hour and he flew RIGHT AT ME! I was clicking away, mentally counting all the money I was going to get. Then realized the manual focus was on, not the auto. Not one shot.