Not sure about 30D...since I am not a canon user, but; q6 X/ R0 o# `6 m: R- G
2 p$ W/ }9 _" C, VFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu..." ^1 i0 b9 L, `2 P' y9 }
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The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.