Not sure about 30D...since I am not a canon user, but- O( d& E. c$ @ ]- p+ D; u
/ m# [* Y( }! s" O! e5 [
For most of the Cameras, this sound is simulated, and it can be turned off in setting manu.../ j2 i: v5 o0 i
. C/ Y+ x' x/ Y+ s' p* e6 r+ u
The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.