Originally Posted by Thn
With focus entirely on the perceived smoothness of an animation, I just created two better versions of the same (ugly) animation. Based on exr's and with motion blur added in Nuke. The difference is quite apparent, the 25 fps version disturbs the eye whereas the 50 fps version is much more pleasing - just like the animations from the great studios, again I'm only talking sheer motion - how things move on the screen in a relaxed manner.
That's at least partly because doing motion blur in 2D using motion vectors produces linear motion blur. So if you have something rotating (like a propeller), the motion blur will be along the tangent, not in a circle. It never looks right, but sometimes it is not so noticeable. Try rendering it with real 3D motion blur instead.
I find 50 fps quite jarring when watching video. I saw the Hobbit in 48 fps, and I'm not sure if I liked it. I'm so used to seeing films in 24 fps.
Originally Posted by Daniel-B
Since most 3D applications represent motion blur in intergers instead of shutter angle, the equivalent would be a 0.5 motion blur setting.
Nitpicking: That's a float, not an integer.