Not sure about 30D...since I am not a canon user, but ! l' Q4 P5 b2 ?; l0 ~/ U" U: g& H- t( u* X
For most of the Cameras, this sound is simulated, and it can be turned off in setting manu...9 V% I8 ^7 I& g" ~7 v7 V( V/ O& ^
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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.