Not sure about 30D...since I am not a canon user, but3 [. X& Z1 J$ r. h5 x* h# U# k! Q
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For most of the Cameras, this sound is simulated, and it can be turned off in setting manu... 0 Z! h4 y# l3 ~2 T, ?/ { * ~8 l* D* C0 Q$ m) pThe shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.