Not sure about 30D...since I am not a canon user, but' f4 }* r8 ^& H; R
( L6 ^ p2 |( T( E' aFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu...& B$ I3 ~: P& `* d' b4 W2 }/ h* _. r
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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.