Not sure about 30D...since I am not a canon user, but ) \6 d1 U, L( }* T0 [9 G% u2 k3 |" o4 [4 C6 z3 `
For most of the Cameras, this sound is simulated, and it can be turned off in setting manu... & M# N0 s6 F3 [+ Q6 T, \% P& U# @8 L8 H8 N" n# g
The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.