Definitions for "barndoor"
Keywords:  fresnel, flap, lantern, climber, hinge
An opaque adjustable flap on a lamp fixture; used in photography to cut off light from particular areas.
A poor example of balance. When the climber loses grip with the hand and foot on one side and they fall sideways as if on a hinge of the opposite hand and foot.
lighting instrument which is used to block off light