I owned an S1. The cap is loose but not to the extent of dropping off by itself. Never had I faced a situation where the cap pop out by itself. Well, in any case, the camera is either in the camera case or in my hands. On the other hand, there are countless times when I forgot to remove the cap and simply twist the switch to on the camera. I can't imagine what will happen if the cap is tight. In fact, nowadays, I don't really care about the cap any more, simply flick the switch and shoot.corollax said:Actually the issue is that there is much higher chance of fingerprinting, scratch, or damage the lens without realizing the loose cap has dropped off. than the good guys at canon making the lens pop the cap. If that happens, take your pick : worthless or joke...