Blend Fog

Since the fog remains constant throughout the scene, you may get some odd looking results when you're creating a sunset or sunrise. In these cases the sun is very close to the ground plane where the fog exists, so the fog should react to the sunlight. The Blend with Sun feature lets you create exactly this effect. As the sun approaches the Fog, the color and intensity of the fog changes to interact with the color of the sun.

To link Fog color to the Sun controls:

1. If it's not already visible, display the Sky & Fog palette by clicking the text item on the menu bar.
   
   
2. Click the Sky Lab button. The Sky Lab dialog appears.
   
   
3. Click the Atmosphere tab.
   
   
4. Click the Blend with Sun button. Blend Haze and Blend Fog will be enabled automatically. Disable Blend Haze if you wish.
   
   
5. Enter a value in the Color field or drag the slider to set how much of the fog color is blended with the sun.
6. Enter a value in the Luminance field or drag the slider to set the intensity of the fog color when it's blended. To get the best effect, set both these fields to 100.
7. Enable the Fog option, change the color of the fog if you want (the better to see the effect).
   
   
8. Click on the OK icon to close the dialog.

Examples:

• Blend with Fog disabled:
  
  
• Blend with Fog enabled:
  
  
• Blend with Fog enabled, sun higher over horizon:
  
  

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