Never treat the background as just a picture. Treat it as a light source . The visible image is simply a byproduct of the energy entering your scene.

Vray Environment Background =link= -

Never treat the background as just a picture. Treat it as a light source . The visible image is simply a byproduct of the energy entering your scene.

The Radisson brands, including Park Plaza, Country Inn & Suites, and Park Inn by Radisson, are owned in the Americas regions by Choice Hotels.
Outside of the Americas, the brands are owned by Radisson Hotel Group, an unaffiliated company headquartered in Belgium.