Not sure about 30D...since I am not a canon user, but 1 a" e* M* w0 @! A" O3 w1 I- c" E$ O" j. J9 ?/ K: k) {, Q
For most of the Cameras, this sound is simulated, and it can be turned off in setting manu...6 J' n: }5 W; }9 r. r8 ~- @
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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.