Not sure about 30D...since I am not a canon user, but e: |' ~6 U. u5 j) y5 ]! O- L( `/ x% y& b- d( b
For most of the Cameras, this sound is simulated, and it can be turned off in setting manu...; }' Y- Y9 J l2 }2 i) O- y
% M& P$ |$ R3 U9 [The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.