Rohan Dalvi adds another tutorial to the series that uses Octane render in Houdini. This one shows how to set up custom render targets in Houdini, but it also covers why you should do so. A VOP node for octane in Houdini, will allow you to make a custom targets or materials, depend in the settings.
a look at how to set up a custom render targets and how to add HDRs
This look into render targets also includes how to ad HDR’s to light the render, and how to color those HDR’s without leaving Houdini. Rohan has done quite a few and fantastic tutorials showing off the use of Houdini’s Mantra renderer. Since the release of Octane for Houdini, along with Houdini Indie’s ability to allow for third party renderers, Rohan has been creating helpful Octane tutorials.