Not sure about 30D...since I am not a canon user, but/ N4 D+ X+ b( X% {4 l* Q* S
* e, \$ r2 Y3 f% ?For most of the Cameras, this sound is simulated, and it can be turned off in setting manu... ) d% Z; h) P. \ f2 _ 2 ]" I3 Q6 K; g$ w8 TThe shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.