Not sure about 30D...since I am not a canon user, but 3 i8 B& l$ E2 e, B, J, P ! t% S) F; h( Q' O9 vFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu.... H1 }. v/ i' d% t" V' c5 u, ~
! X7 V. k7 H$ l+ ?; L/ {
The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.