Not sure about 30D...since I am not a canon user, but |. `+ F* g `6 ] R6 u& Q
1 i: ]. D' E+ S' m' G5 g
For most of the Cameras, this sound is simulated, and it can be turned off in setting manu...8 Q" v- y" d( J4 x, p1 w
& p1 K& _1 Y$ N V! x* r
The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.