Efter att ha tittat på showen kan jag säga att vi för det mesta inte kan se båda sina ansikten i ett skott. Så det kan uppnås med Doppelganger-metoden, som jag förklarade i mitt andra svar på den generiska frågan om hur dubbla rollscener bildas :
En annan sak att notera här är att en av dem alltid hade håret täckt av tyg; Det kan vara en bra metod för att uppnå håret som matchar.The first thing you need to do is find someone who is about the same height as your main actor. Similar hair is also necessary, so whether the Doppelganger needs to dye his or her hair or wear a wig, that’s a judgment call.
Place the Doppelganger with his or her back to the camera and frame the shot to shoot over that person’s shoulder to focus on the main actor. Film it that way until you get what you want.
For the reverse of that shot, switch the hair and the outfit of the main actor and the Doppelganger and do the same thing on the other side. This way you can edit it so that you basically have the same person having a conversation with himself. - (Source: timidmonster.com)
Jag minns många scener med båda som står inför kameran, men det är inte heller praktiskt taget omöjligt idag.
Från mitt eget svar på hur det görs i Dhoom 3 (Bollywood film) :
Aamir: With newer technology it becomes difficult for the actor, as the kind of shots you can design for a double role are limitless. Earlier due to constraints of technology, you could not touch each other in a double role. Physical contact could not be captured, as you would end up touching yourself on screen. The camera used to be pretty-much static and in wide. Here were are hugging each other, exchanging hats, one is giving an Apple to the other…Because with motion control cameras, you can duplicate the same moment a number of times. The angle and position are all locked in a computer, so a situation can be recreated identically, multiple times, for an actor to perform different shots for his respective character in a double role.
Jag försökte gräva för det specifika fallet Quantico utan framgång.
Hur som helst en ganska imponerande svar på Quora säger följande om hur sådana scener kan skjutas:
Several methods of doing it:
Split-screen: This is an old method and consist in physically cutting two negatives down the middle and putting them back together. It left a vertical line which needed to be masked somehow. Nowadays, with the digital editing software, you simply layer the two shots and put a mask over one of them. Since many post-production software packages let you animate masks, some simple interaction may be possible as long as the characters never obstruct one another. You can use also compositing software for more complicated shots. Using a green-screen: You can shoot the scene with the actor playing the first role in the real set then shoot the same scene again with the same actor playing the second role against green screen then key him in the scene. If this involves camera movement then a motion-control rig would be necessary to exactly repeat the movement done in the first pass.
Face/head replacing: You have two actors who are very close physically (same body structure). They will act independently, but in post-production you take the face or head of one and put it on another one. That's how they did it in The Social Network with Arnie Hammer: http://popwatch.ew.com/2010/10/0... The same technique was applied in The Curious Case of Benjamin Button when they had a kids, a dwarf and a disabled actor all playing Brad Pitt's role, but they replaced their faces with Brad's.