MBlur on - turns on motion blur.
DOF on - turns on depth of field sampling.
Subdivision - determines the number of samples (rays) for calculating depth of field.
Bokeh effects - defines the shape of the camera aperture. When this option is off, perfectly circular aperture is simulated. When on, a polygonal aperture is simulated.
Blades number - Number of blades.
Blades rotation - defines the rotation of the blades.
Center bias - defines a bias shape for the bokeh effects. Positive values make the outer edge of the bokeh effects brighter; negative values make the center of the effect brighter.
Bokeh anisotropy - allows stretching of the bokeh effect horizontally or vertically to simulate anamorphic lenses.