For this scene, we need a 2-part setup. First, we need a plate of the back wall, taken from the vantage point of the mirror.
Next scene, camera is placed behind the actor that is standing in front of the mirror. If possible, try not to have them to move too much. I will then remove the glass (in post) and rebuild the mirror without the actor casting a reflection.
- Shoot background plate
- Shoot scene from behind the actor