Not sure about 30D...since I am not a canon user, but1 j% ]% l2 I+ a* U7 {- h+ ]
+ ]. r% `( d# S3 UFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu...# |$ a1 U: ]. i8 @0 b1 Z9 T/ m' \+ N
+ ^& f h3 \( M& z
The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.