Not sure about 30D...since I am not a canon user, but- ~" V. i/ {2 M, I% O, R0 {, l
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For most of the Cameras, this sound is simulated, and it can be turned off in setting manu...& h1 f3 S2 F9 A& }0 c
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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.