Not sure about 30D...since I am not a canon user, but ( @8 R5 p" B) `3 |8 C3 G7 u 0 }. {# G+ I2 EFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu...9 z9 Z% t+ K9 ^4 y z. W% K
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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.