By most accounts 1D MK III is quieter than the 1vHS at 10FPS. That one was terribly loud at 10FPS and not so bad, but still loud, at 7FPS. After you use the fast cameras like F5 (w/9 cells), 1vHS (w/NP-E2), 1D MK II etc, for some time, the sounds are second nature. Current Canon bodies tend...