Photography buddies Mark & Kevin had a laugh and did a fun Waynes World” tribute set in front of a green screen. It’s a technique used a lot in the film industry to put actors in front of a make believe backdrop, these days often computer generated and motion tracked to the real world camera allowing the actor to move around a virtual world in a very convincing way. The background removal technique is called Chroma Key Compositing or Chroma Keying and uses a constant green or blue backdrop that can be subtracted easily from the filmed images easily using either analogue or more modern digital techniques. You’ve have seen it a lot, possibly without realising it – weather reporters stand in front of such a screen and motion to something that’s not really there, often looking to a monitor at the side to check they’re on target and that their team aren’t pulling a fast one of them by swapping the weather map out for something more interesting. These days there are “3D” cameras like the ZCam by 3DV Systems that are able to take 2D image and Z-depth data and in real time exclude anything beyond a desired distance or break it into layers so that a second actor can walk between the first and their backdrop as if they were there! This technology is coming into gaming now, so high end photography ones may be affordable to the resat of us very soon!
While doing my 100Strangers project I shot a couple of ladies in front of a shop that was undergoing a facelift. The builders had kindly painted it in a fairly consistent green.