OTOY Forums

Shooting glass or reflective objects it's really handy to use a circle polarizing filter on your lens to reduce reflections.. Is there any way to go about this in Octane? In the past I just deal with it by rendering a couple different versions and comping together in photoshop but it would be much easier if I could figure out how to do it in render.

To clarify, it's not simply removing all reflections, it's just removing reflections coming from certain angles. Here's a video showing what it does, for the uninitiated

https://www.youtube.com/watch?v=ChQgV7DlkQo

Maybe you can try this:

- Make a Specular material without reflection
- Make a Glossy material set to Mirror (IOR of 1 and no Diffuse)
- Make a Mix material
- Drive the mix with a falloff node
- Colorcorrect the Falloff with a gradient

Ich uploaded a material. You can adjust the Polfilter with the slider in the gradient node

I hope that helps.

hmmmm good thought! basically creating the polarizing effect on the object instead of at the lens. i'll give that a shot

Hi,
interesting question
here is my attempt, almost the same principle as Hesekiel2517 but with a falloff node only in reflection of one specular material. Firstly I have inverted the Normal and Grazing values.
Falloff index = 15 : Falloff index = 1 : ciao beppe