How to use MentalRay “Skyportals” for criticial daylight interior scenes

Intro: analyse visualisation with and without skyportals

Change renderpresets for better result instead of using skyportals

How to set up your sky portals

Adjust exposure control. Compare rendertime with and without skyportals (skyportals increases render time!)

Switch skyportals on/ off. Position skyportals on the same line like the window glassesof skyportals