Marvel's 'Doctor Strange' will be the studio's answer to 'Fantasia'.

Cinematographer Ben Davis - who's previously worked on 'Guardians of the Galaxy' and 'Avengers: Age of Ultron' - has revealed the eagerly-awaited movie will be unlike anything the studio has released before, likening it to the iconic 1940 Disney movie.

Speaking to ScreenDaily, Ben teased: ''It has a very psychedelic grounding, and it's not your typical Marvel action movie ... Most of the work within it is about other dimensions.

''And I described it, I think, when I was talking to Marvel as Marvel's Fantasia, in a way, because it's so sort of out there and different to everything else that they've done.

''There's a lot of pre-visualisation, and there's a lot of work which is very hard - you look at it and you see the imagery that they've created for it and you think, 'Well how the hell do we shoot that!?' because it's all sort of Escher stuff.''

Meanwhile, an insider claimed recently that the movie's central star Benedict Cumberbatch is feeling the pressure to gain weight for the part.

The 39-year-old actor is said to be struggling to build muscle for his superhero role.

A source previously said: ''Doctor Strange was always muscly in the cartoons so Benedict has to look the part when they start filming in the autumn.''