However, you cannot add an Arnold Parameters property to a camera (at least not using the SItoA custom menus, which will tell you that a camera is “is not a valid Object to add Arnold Parameters to”). Here’s a couple of ways to work around that:
- Create an Arnold Parameters property on a polygon mesh, and then in the Explorer, drag that property to your Camera.
- Select your camera and run this Python snippet:
cam = Application.Selection(0) cam.AddCustomProperty( "Arnold_Parameters" )