Not sure about 30D...since I am not a canon user, but - m: j' F- p$ _' C$ l" F! n! {, E , H4 Q; l" T8 {9 ^For most of the Cameras, this sound is simulated, and it can be turned off in setting manu...; M3 q: Y/ M# Z2 e9 m* `
* Q Z. J. @- m% j( lThe shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.