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Hey guys,

I posted this question in another section but didn't get much response so trying to get some help here. know this is a newbie question and i believe i've done it before. I have an octane sky with an HDRI image which i want to light my object but i don't want to see the image in the background. Is there a way to turn off the HDRI background but still have it light the scene? I tried to turn off the camera visibility which did nothing. I added a compositing tag and turned off camera visibility there as well but it didn't do anything either. Trying to figure out what it is that i'm missing.

Hi,

We need some more information, are you using standalone or a plugin (and which one)? The answer can be very different depending on this info.

Hi there,

I'm using the plugin in Cinema 4D, the version is 2.16.2. Thanks!

This is better asked in the C4D plugin forum, but I did find this thread that might help:

viewtopic.php?f=30&t=51433&hilit=hdri

It's not possible except by composting it in 2D after the fact.

This functionality has been requested numerous times.

I should have done a search but figured it out, thanks

paulforgy wrote:It's not possible except by composting it in 2D after the fact.

This functionality has been requested numerous times.

That's really strange because the Blender plugin can do it, and the same settings are used that aoktar specified in the thread I linked to.
Here is the rendered file so you can check and see if it works for what you need:
Here is the scene rendered with the hdri not set to alpha:

grimm wrote:

paulforgy wrote:It's not possible except by composting it in 2D after the fact.

This functionality has been requested numerous times.

That's really strange because the Blender plugin can do it, and the same settings are used that aoktar specified in the thread I linked to.

alphahdri3.png

Here is the rendered file so you can check and see if it works for what you need:

alphahdri1.png

Here is the scene rendered with the hdri not set to alpha:

alphahdri2.png

Right. That would work for 2D compositing, like I said.

But, can you put something else in the background such as another image? If so, that would be great. As far as I know that's not possible, and that's what people like myself have requested.

paulforgy wrote:
Right. That would work for 2D compositing, like I said.

But, can you put something else in the background such as another image? If so, that would be great. As far as I know that's not possible, and that's what people like myself have requested.

Not in standalone, but since aoktar is a smart guy, it is possible within the c4dOctane plugin
The trick is to add a c4d background object and assign to it a standard c4d material with the proper texture in the color channel. Then you can see and render the full fram in both Live View and Picture Viewer without having to compose it later on ciao beppe

It would be great to get similar functionality in Max. Octane is using Max's environment background slot for lighting so there's no way to specify a separate background node.

Mentalray and Iray use a node called 'Environment background switcher' which lets you specify separate nodes for lighting and background.