Anytime you introduce scale differences in two characters acting on a screen, it complicates things immensely... but the net result is something you don't see everyday, which makes it interesting.
(Production Designer)
Robert Stromberg is an American special effects artist, designer and filmmaker. Stromberg's credits include films such as James Cameron's Avatar, Tim Burton's Alice in Wonderland, and Sam Raimi's Oz the Great and Powerful. He made his directorial debut with the 2014 Disney film Maleficent.