Sky & Atmosphere for Cycles Render The Blender Manual describes for Blender Render extensive setting options for Sky &amp; Atmosphere, like in-scattering, extinction, exposure, brightness, turbidity etc. However, in Cycles Render that all seems to be condensed in world => background => sky texture, with only turbidity and albedo as parameters. Aren't there any more functionalities in Cycles Render?
For atmospheric/volumetric effects in cycles you have to use volume scattering and volume absortion on the volume section: