Not sure about 30D...since I am not a canon user, but % r* [5 R; Y6 D( R1 q9 I$ B2 F0 L
For most of the Cameras, this sound is simulated, and it can be turned off in setting manu...0 C5 @! g" D- ]
8 e5 y2 `* L$ F5 o. o3 B# I! t- LThe shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.