Not sure about 30D...since I am not a canon user, but. U* X1 G: G9 h. T7 ~9 q; y
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For most of the Cameras, this sound is simulated, and it can be turned off in setting manu...' s4 t6 _: w8 v; C4 H- ?
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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.