how to copy a lighting effect in a scene

william_b25f693951

A while back I saw a picture of a woman in a sunny window, camera was placed in her shadow, dust floating in the air.  Reflected light was just enough to hint at what she was wearing.

Now I understand about souce of bright light outside, and maybe a dim light source on each side of the figure behind the camera, but how do I do the floating dust?  Any other recomendations?

mjc1016

You need some sort of volumetrics...either a render version or a postwork version, but the dust/rays are a volumetric effect.

Which renderer are you wanting to do this in?