Everyone knows that green screens are used by filmmakers who want later to insert a more interesting backdrop to a scene.
Today’s invention adopts the idea by colouring, in a nice uniform matt green, all items of filmaker’s hardware on a set which might inadvertently extend into a shot.
Any instances of this unnatural shade appearing in recently taken images could automatically alert the crew in realtime, by beeping.
This would allow amateur directors to avoid having to reshoot multiple scenes because for example, someone allowed a microphone boom to be captured as a reflection from some shiny surface..