Interesting to see how much mirror flap there is. In film days, I worked with a Leicaflex-SL, and they had the mirror cam driven so it never banged against anything and never bounced off anything. The mirror would swing up and its speed would be controlled and reduced by the cam. You could really feel the difference between the Leicaflex and the Nikon Fs I used at the same time. I could easily hand hold 1/15- 1/30 with a 180/2.8 with the Leitz, whereas 1/60 was the absolute minimum I could manage with the Nikon.