Not sure about 30D...since I am not a canon user, but: \$ h/ j' ?* w1 f
" m& n; m7 b" |+ r7 @; \. M- K9 oFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu... , T% {. ?7 e5 u4 I2 Z A& R. A1 {! Z. qThe shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.