i have a material (applied to the ground plane) that uses a gradient ramp (radial) in the refraction channel. the idea is that the ground plane will fade away in the distance.
you can see that this is not working like i was imagining.
neither 0 nor 1.0 for the IOR was working. i only got it to work by using a MAX standard material (with vray mat wrapper) with the gradient ramp in the opacity channel. now i am not even sure if i like the effect anyways.
the other thing i had to do was make sure that the ‘affect background’ was turned ON. this is a bit problematic, though. i have the dark multiplier set to 1.5 for the scene, so when that “affects” the background, it makes it quite dreary looking. any other way to get around this?