Processing and Formatting Effects > Flame FX > Depth Of Field >
Blur and Blooming Settings

Width field
  Enter the horizontal blur amount in pixels.
Height field
  Enter the vertical blur amount in pixels.
Proportional button
  Enable to constrain blur amount proportions.
Bokeh Blur field
  Displays the amount of smoothness applied to sharp bokeh edges. This creates the blur that is applied to out-of-focus points of light to simulate a shallow focus.
Blooming field
  Displays the gain applied to highlights in non-HDR iamges, to allow the creation of bokeh patterns without affecting colour integrity. This creates the glow effect that is applied to the bright spots of the image to simulate light bleeding, or blooming, over the edges.