Not sure about 30D...since I am not a canon user, but 2 F( l! S) x0 h1 p9 f' }5 r( w+ V9 b- r5 n
For most of the Cameras, this sound is simulated, and it can be turned off in setting manu... $ ?" R/ i; @1 p2 }, H& v* K: X- g H+ _& a' R! S" c5 r
The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.