filter**

Some information on filters should go here

filter.dof**

Depth of focus makes the object at the focal distance in focus, and items out of focal range blurred. 

   <filter type = "dof"
           focus = "focus"
           near_blur = "near blur amount"
           far_blur = "far blur amount"
           scale = "scale">
   </filter>

focus: yesno
Use focal blur filter?
near_blur: 0.1 to 50.0
Amount to blur items too close to camera.
far_blur: 0.1 to 50.0
Amount to blur items too far from camera.
scale: ???

filter.antinoise**

Apply noise reduction filter to the image. Useful for getting less grainy (noisy) images while reducing the number of samples. The tradeoff is the image loses detail. 

   <filter type = "antinoise"
           name = "name"
           radius = "radius"
           max_delta = "maximum delta value">
   </filter>

radius: 1 to 25
Radius (in terms of pixel) of filter.
max_delta: 0.0 to 1.0
???