Not sure about 30D...since I am not a canon user, but- Z* C3 U2 u5 W- c9 J0 h. E% p' I( C
: o) _+ D% L% dFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu... 6 w+ |3 h3 _7 Q7 V . b5 l' x r0 e$ k c* T& j* XThe shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.