Not sure about 30D...since I am not a canon user, but : }- i! F* _1 e- }3 D0 b7 z3 X4 S: n2 q; L3 ^ @+ u' ^2 j/ C
For most of the Cameras, this sound is simulated, and it can be turned off in setting manu... $ Y+ g- q2 M! k$ i2 L) h+ Z: T) z8 A% C* r
The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.