Not sure about 30D...since I am not a canon user, but% W- l' H. L, g2 ?
; _) @5 x+ I* A" B: E# xFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu... , m8 F* A) N( D( d3 A * K: K/ t8 d# a0 R& s3 y8 R! @7 dThe shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.