Not sure about 30D...since I am not a canon user, but/ A7 ]/ U; z% i1 [ Z0 t& ]
% g6 u% V' J" a g/ TFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu... : ^2 [. m+ i, r3 y) h 0 [! p0 S }6 Q- k' vThe shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.