Does anyone know the correct camera mapping technique?

I am trying this way (pics attached) but the texture bleeds through to the other side, which is no good for me. I am trying to get to the technique also attached.

Thanks

Screenshot 2023-10-10 at 18.25.33.png

Screenshot 2023-10-10 at 18.29 ...

Hi there,

I was making a little firefly with an area light, but it transpires that depth of field doesn't blur out lights, just makes their sphere seem bigger - is there a way around this?

Thanks

Hey there,
I have an object I would like to glow, and to see the glow reflected on other objects. Only, in order for the glow to be bright enough to appear on the other objects, I have to crank the settings so much that the object itself is completely blown out. Is there a way to fix this in render ...

Thanks, but I want to turn the object off and ONLY see the reflections that would appear on it so I can compose with it.

Hi - I have a glass object and an Xparticle emissive light. I can see the reflection of the particle in the glass, but I dont want to render the glass object.

I cannot find a render pass to do the job, and Octane doesnt honour the C4D compositing tag. Can anyone clue me in on the workflow for this ...