Cycles: see through emissive plane from the back with camera?

Support Basics & Interface
1

Hi folks,

I’m looking to create the following scene using Cycles:

I want an emissive image plane facing an object. I want to have my camera also pointing at the object along the same axis. So i want the camera to register the object as it reflects the light.

Can anyone tell me what are the important settings to achieve this, because as yet i can’t make my camera see through the plane as if it’s transparent from the back.

Thanks!

2

Simplest way… In the Properties Editor → Object → Ray Visibility
Turn Camera off.

3

Thanks!

I’m struggling to get a reflection in Cycles, could anyone tell me where i’m going wrong?

My lower plane should be completed reflective (roughness on 0), but all i get is a completely diffuse reflection.

Any ideas?

Here’s my Blend file:

4

That’s because you’re generating your plane inside a GN nodetree.
In that case, the geometry doesn’t have any material assigned (because is new), and you need to use a Set Material node to fix that.

5

Ah-ha, that explains it, many thanks!