Not sure about 30D...since I am not a canon user, but c. v8 ]9 K$ k9 g# A! Y, M7 p: R: T' x4 R# n# i
For most of the Cameras, this sound is simulated, and it can be turned off in setting manu... - g! a/ [: ~+ J! C# s6 x- K+ e, T+ f V( L0 X
The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.