For an object out of the screen, the distance perceived by the viewer from the screen and this object is proportional to the distance from the screen itself.
For example, a viewer located 10 m from the screen receives an effect out of 7 m from it. If the same viewer moves toward 20 m from the screen, it will still leave the effect to 70% of its distance from the screen (to 14m).
All rights reserved – dépôt SCAM n° 2009110153 November 26, 2009