Not sure about 30D...since I am not a canon user, but ) ~# Z9 c" @# m ) o8 B! u( o& M0 j- ~# ?) GFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu... & e8 @5 Q6 A8 T5 M4 g* Y# U5 d, ]4 ~; j* x- M; m) \
The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.