Spherical camera option with sun/sky in iray render

silky

Hi, some help with this problem please.
I am using the spherical camera option - (camera/lens/lens distortion type) to produce 360 degree equirectangular images.

This works fine, but I want to use the Sun/Sky only option when rendering as i think the the lighting is much better.
Problem is that I need sky/clouds to be seen in the 360 degree image.

Any help appreciated.