Grayscale Effect only on one object (two cameras)

Hello,
I have problem. I just want Grayscale effect to be applied ONLY to the chair on the stage.
The chair have layer CurrentItem.
And I have two cameras:

  1. Camera_All rander everything except layer CurrentItem (I set this exception in CullingMask)
  2. Camera_CurrentItem

Finally:

What am I doing wrong? :frowning:

Having the same issue here.
The image effect is applied to both cameras even though the script is only attached to one camera.

[Solved]
In order for image-effects to work you need a fragment shader. I will provide a unity-package with my solution.
[100075-grayscale-3dprinter-package.zip|100075]