[Variety]

…  “We did tests and realized we had to add details to the clocks, machinery, gears and pipes because for 3D to work well, you always have to have many objects before you,” Ferretti added.

… in comparison, “Hugo” was shot stereoscopically and used huge, elaborate physical sets, with vfx supervisor Rob Legato adding only the background extensions.

Cinematographer Robert Richardson was both “excited” and “daunted” by the prospect of his first 3D shoot, which also happened to be his first digitally shot feature. He used Arri Alexa cameras paired on a Pace rig.

The early considerations of shooting in 2D and doing a conversion were on the table “for reasons of economics,” according to Richardson, “but Marty always wanted to shoot on 3D … and there’s no question that if you’re taking 3D seriously, capturing it that way is vital.”

Sorsese looks forward to further technical advances.

“You’re talking more than 3D, you’re talking holograms,” said the helmer. “That’s where it’s going, ultimately … It doesn’t have to be science fiction. You can do ‘Hamlet’ in hologram.”

Read the full story here: http://www.variety.com/article/VR1118046470