I am using ray-tracing with a slight IOR on a curved smoothed mesh a a lense for an experiment and it works great but I have noticed that Anti-Aliasing or Oversampling does not work properly. It seems like the AA/OS is being applied before the tracing. The image is stretched by the lense and the edges are ragged :eek:.
P.S. Blender updates it renders with spaces and expose active in real-time