Not sure about 30D...since I am not a canon user, but 3 e7 ^ v$ `# U1 s4 p7 w/ ]) B9 T ! e8 A8 r$ M6 L* L8 C) k% [For most of the Cameras, this sound is simulated, and it can be turned off in setting manu...7 W. q+ |7 V7 c
A- x9 l9 Q+ E9 kThe shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.