float for what inverse depth to focus on (1 on top of the camera; 0 is infinity)
float for how deep the band of in-focus geometry is (a value between 0.01 and 0.1 is reasonable)
float the expression that represents the inverse depth (defaults to sampling the red component from channel 0)
how many times to repeat the gaussian blur
Generated using TypeDoc
creates depth of field expression; all values are mutable by default