The Arnold Sky object offers a user-friendly approach to setup image based lighting or a physical sky. 

 

 

See the Skydome Light and Physical Sky shader page for more information on their parameters.

You can choose between a sky (skydome_light with background enabled) and physical sky shader as the background via the Type combo box.

You can add light filters and set up light linking of the Arnold Sky object as by any other lights.

Light filter and light linking options

 

Add Texture to the Sky

To use a map, you must change the mode of the Color parameter to texture or link.

 

In texture mode, you can load an image as a native C4D texture (Bitmap shader). This mode does not allow the use of an Arnold shader network.

In link mode, you can create an Arnold Material and drag & drop it to the Color field. The root of the shader network has to be a texture type shader (e.g. image).

 

The Cinema 4D Sky object incorrectly flips the texture compared to Arnold. If you want a matching result, turn on Flip in the sky parameters.

If you already have an Arnold Sky object in the scene, then the Background field of the Arnold Render settings is not used.

 

Current Limitations:

  • The Physical sky is not supported in the viewport.
  • Lighting is not supported in the viewport.
  • If a shader network material is linked to the sky color, then only a root image shader is supported in the viewport, UV settings of the image shader are not supported in the viewport.

 

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