Not sure about 30D...since I am not a canon user, but. d* e4 H- A5 e. X+ G& x
/ s6 P8 N( S9 S+ D* b! }0 KFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu... 3 T/ ]1 [. {2 C% I$ n: d2 W0 J$ n) p/ s) g/ g( }) W' R* o
The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.