Not sure about 30D...since I am not a canon user, but ; Y4 m1 h- g% |+ @: i5 e) y8 r* ^* ], s( f) f/ e
For most of the Cameras, this sound is simulated, and it can be turned off in setting manu... ( [- M7 _% S! `0 ~5 [7 j) T# u7 R, p7 @( P0 P8 k. J
The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.