Not sure about 30D...since I am not a canon user, but' c4 f0 H) {9 Q! J5 c
$ `% M H" _0 }3 x+ A, \9 C/ s( aFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu...2 W$ n: w- U8 t/ ?: K1 f. @
4 J9 G4 `! i6 z `5 ?: H$ _# z
The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.