If this "more natural motion blur" thing is a computer interp/best guess, will there be situations where it breaks down and guesses wrong? From my experience, every attempt at this, ever, has broken down in difficult situations.
like say.. fields of grass blowing in wind. translucent objects. Etc. Stuff that has rapid subframe motion... light streaks on rapid/jagged camera movement.
Actually it doesn't take much to crash into the limits of computer interpolated vector mblur. So I am pretty skeptical.
Has the hard stuff been tested? Does the short snapshot frame use the longer exposure as a guide for vector motion or some other new fangled magicnology?