Not sure about 30D...since I am not a canon user, but . ^+ K( ^0 \9 H 0 D" H0 c6 l5 x0 l/ ~9 M+ R4 TFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu..., Q: a3 K, \# s
* O5 O( L" T4 s# A# V3 a3 SThe shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.