Separate Reflections, Light and background.

[Fabrice]

In an outdoor scene I'd like to separate the reflection environment from the lighting and also from the background picture.

For example :
The scene is lit by a sun+sky
The background is a JPG file
The reflection come from an HDRI file

How to achieve that please ?

[bepeg4d]

Hi Fabrice,
- enable multi pass beaty Environment and Reflection
- enable Alpha channel in the kernel settings
- set the sky + sun as primary environment
- set the HDRI as Visible environment with only reflection ticked
- compose the layers in your prefered image processing app.
voilà
ciao beppe

[Fabrice]

Thanks again for your answer Beppe !
I'm sorry I'm an octane beginner...
How do you set the sky + sun as primary environment
and set the HDRI as Visible environment with only reflection ticked ?

I don't know where those options are...
Fabrice

[bepeg4d]

Hi Fabrice,
sorry, which version of OctaneRender are you using exactly?
Standalone or integrated plugin?
ciao beppe

[Fabrice]

Yes
Octane 3.04.5 + 3DS Max 2014 plugin

[paride4331]

Hi Fabrice,
Here are some links may be helpful:
viewtopic.php?f=27&t=41933&start=10#p306069
viewtopic.php?f=9&t=59392&p=304010#p304010
In Octane 3dsMax plugin Discussion forum you will find a lot of information from users available to give you advice.
viewtopic.php?f=27&t=59549#p304625
Regards
Paride

[Fabrice]

Thanks a lot Paride, seems very helpfull!