Not sure about 30D...since I am not a canon user, but8 Q( h; j# I+ M& u0 X. _7 A
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For most of the Cameras, this sound is simulated, and it can be turned off in setting manu... / K2 i4 r( Q+ q* y( l3 S0 M 8 Y6 d4 z: t) h$ W3 I# O% S! k/ bThe shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.