Franklin Richards, the superpowered baby of Mister Fantastic and Invisible Woman, is played by a group of real-world babies in Fantastic Four: First Steps. However, in several scenes, the little guy is depicted through CGI.

Marvel Studios has finally produced the best version of the Fantastic Four to hit the screen yet. But that doesn't mean everything about the movie is perfect.

A Manhattan with a retrofuturist sensibility is among the intriguing visual aspects of the film. We talk with its designers to get the details.