Not sure about 30D...since I am not a canon user, but! P5 D- h. G4 L# A6 o' E
1 ]6 r2 h M" g6 T4 N: q7 wFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu...& _: x# z% M0 {* q: }0 f
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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.