How do they show Anna and Alex onscreen at the same time?

[tnysgrl]

I've seen it done before when one actor plays two characters, but how do they do it?

[Sam_Philly_Girl]

Alex is filmed in the hospital room alone or with Finn.

For the scenes where Anna is talking to Alex, the actress is standing in front of the projection screen showing the Alex filmed scene.

[wfreshie2130]

scenes are shot with the lead character playing only one role. Later, the other role is played in a green screen area and both are added digitally added together.

if there is a fight scene where they are wrassling with eachother 1 is them is the actor and the other is a look a like, they film certain scenes where we only see the face of one and the back of the head of the other from both points of view

here is a link https://www.nytimes.com/2015/11/15/m...in-legend.html

how they did it back in the parent trap and how it is done today

[crosbpa]

Hollywood magic.

[tnysgrl]

Thanks for the info...interesting!

[JaeBianca]

Actually, the green screen isn't even necessary. As long as everything else in the scene stays fixed and the camera angle doesn't change, they can digitally combine Finola Hughes performing the scene twice as each character. As others have said, they can use doubles if the two characters interact. If the budget is good, the double can wear a mask to match the other main actor or their face can be digitally replaced in post.