Hi, I want to cheat a BG scene by using a photo as a material on a grid (instead of having to build a whole BG scene), but when I put the grid in the scene it blocks the sunlight coming through. How cam I have the sun and sky pass through the grid and hit the table but still see the geo BG in the render. I have a camera move and want everything to be correct, that's why I have the grid in there instead of just comping a background in post. See pics attached.

I tried to have the grid be excluded from the sun/sky in a light linker LOP, but to no avail.

thanks,

Hi Dan, for this you would want to use the Render Geometry Settings LOP and disable shadow casting under Shading > Render Visibility.

Siavash Tehrani
Hi Dan, for this you would want to use the Render Geometry Settings LOP and disable shadow casting under Shading > Render Visibility.

Awesome, thanks!

Do I choose "invisible to shadow rays?" I don't see something called shadow casting. And how do I do this for just the BG and make sure other objects cast shadows?