Not sure about 30D...since I am not a canon user, but' N. Z+ _- _1 e1 |4 l9 p
/ S2 B) `+ P0 [: m4 v# O- h) n; \- qFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu... % A1 x( u3 N$ y& d 8 D2 z5 i$ y+ i) w1 rThe shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.