Not sure about 30D...since I am not a canon user, but$ N' i$ x+ L9 s9 |4 ^8 o7 m: }
1 }' u2 G1 @3 QFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu... # J, q# i5 q' A' I$ z2 \ & d4 n6 N; y' |* \+ l) K5 WThe shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.