Not sure about 30D...since I am not a canon user, but* J- C5 W2 }" C5 b, ?3 g) U
- R' p5 N, C7 ~/ Z- F# l' `For most of the Cameras, this sound is simulated, and it can be turned off in setting manu...% E- m' B$ i" i: K9 }- t4 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.