Not sure about 30D...since I am not a canon user, but 8 ~/ M6 q; d- d2 I" B% ?5 b, h+ o- Q' }: V8 j0 _+ l
For most of the Cameras, this sound is simulated, and it can be turned off in setting manu... " v( b# e4 o+ p5 A. r( q6 Q; m/ x 6 c9 Q3 I( x. r# t% y* N8 uThe shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.