Not sure about 30D...since I am not a canon user, but ; z. J u; j5 B 7 n1 r0 E \- o' e; y0 cFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu... * [4 R2 x& K; a, y& T/ f) f, e4 c& X4 r# m
The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.