Create surface plane that doesn't reflect

[cneville]

Hi,
I'm looking to create a surface material that will show color sunlight in the scene will not cause that color to be reflected back on the other objects in the scene. It is basically a round disk which ultimately will be replaced by animated water in post. Right now the materia even with no reflection layer bounces the diffuse color back into the scene and onto the other structure elements in the scene.

thanks,
chuck

[Micha_cg]

In the past I use an visible rectangular light with black color to block the indirect light from a white ground. Place it a little bit above the ground, light dir upward.