Not sure about 30D...since I am not a canon user, but+ d5 ~* y# Y+ ]. A$ U1 A y3 O
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For most of the Cameras, this sound is simulated, and it can be turned off in setting manu... 5 g% p `) S3 ^ N1 e* x0 x) X' X+ p& l7 g. A& a/ `; f
The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.