Not sure about 30D...since I am not a canon user, but , S$ h. E; U% f" @ 0 d! s0 P, V* r8 w6 v) S! u# a7 a% aFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu...! I' Q9 I& s' _' 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.