Not sure about 30D...since I am not a canon user, but 7 V2 n( }8 f0 V% `% v7 W) Y+ Q! b' Z, N% {4 x8 b4 X
For most of the Cameras, this sound is simulated, and it can be turned off in setting manu...7 ?! l( b* x+ S$ t6 N# d+ K
P- L6 I( V3 p& H/ bThe shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.