Not sure about 30D...since I am not a canon user, but 2 {8 }, q9 U& V- _! n: L) w# E ; t: z7 L, M, z- A1 {6 T: vFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu... 6 c, l- R. i2 q6 S4 f4 \* R d+ h7 c
The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.