Not sure about 30D...since I am not a canon user, but 4 h9 C; T0 g& Q. N `3 |, k x! V S) O1 h
For most of the Cameras, this sound is simulated, and it can be turned off in setting manu...* ]2 t3 L6 b9 x- `" L0 K3 n/ Q/ 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.