Not sure about 30D...since I am not a canon user, but , u. B: G( ]6 d. }' M( k ; Q4 b( {& d: \* W( VFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu...; s% U# N1 E: u1 M7 z+ s
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The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.