Nikon D4 vs Nikon D4S Shutter Mechanism Comparison Video

One of the new “big” features of the Nikon D4S was a new mirror balancer and damping mechanism that reduces bounce during high speed bursts, which the D4S can deliver at 11fps. The comparison is pretty telling of the improvement when compared to the D4 operating at 10fps. You should notice that the D4S mirror bounces less between frames and the distance of the bounce is shorter as well.

Bonus fact: This video was filmed in slow motion on the Nikon 1 V2 at 1200 FPS.