Many thanks to @itsartmag and to Ayako!
It’s Art Magazine has posted a piece on the Making of 47 Ronin by MPC. The piece features some of the before and after shots that MPC did for the film. They completed about 250 shots that encompassed a wide range of effects. The operation was multifaceted that brought together experts from the art , rigging and animation departments.
You can read the entire piece here.
You can also visit MPC’s site directly and read their piece that contains a lot more detail and photos. It is here.