Not sure about 30D...since I am not a canon user, but 0 {" C2 p3 J; U: }4 A: [0 P% N) n' b1 h
For most of the Cameras, this sound is simulated, and it can be turned off in setting manu...! b& s; X `* s; u5 S
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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.