Not sure about 30D...since I am not a canon user, but ' U4 x( c' j/ x% E- i) C$ T# `4 f2 K% b) c
For most of the Cameras, this sound is simulated, and it can be turned off in setting manu.... W9 `7 I" N5 e1 s. ^+ w! Z
6 L, X# ], k4 ]9 l. O0 x; kThe shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.