DOF_LENS
THE BOX'S MAIN HELP:
This implements a depth of field lens effect. PLN is the negative distance of the focal plane from the camera. RAD is the radius of the disc centered at the camera.
PLN (input):
This must be a scalar. The default is -1000.0. This is the negative distance of the focal plane from the camera. This distance must always be less than 0.
RAD (input):
This must be a scalar. The default is 0.2. The wider the radius, the greater the effect. A value of 0 turns depth of field off.
OUT (output):
This is the returned color for the jittered pixel.