Thank you very much Wizzard! There are a few ways you can make this fog effect in the render (assuming you are using Daz Studio). 1. The easy version. Use the Fog prop that comes with the item Atonement Iray. 2. The versatile version. Use the great item "IG Iray Dawn to Dusk 2 Atmospheric Lighting" by InaneGlory. Lots of fog nuances and thicknesses. 3. The cheap version. Make a huge sphere. It has to enclose the scene. Then under the surface tab, change this: - Base color: White - Glossy color: White - Glossy reflectivity: 0.50 - Refraction weight: 1.00 - Thin walled: OFF - Transmitted Measurment Distance: 750 - Transmitted Color: White - Scattering Measurement Distance: 750 - SSS Amount: 0.25 - SSS Direction: 0.50