Not sure about 30D...since I am not a canon user, but5 \) W& @& G9 t
' X9 b, l$ G3 V5 eFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu... ( S7 F( _, r$ M8 A/ I9 J# j# D1 u6 H3 B7 W
The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.