Quote - > Quote - follow the link to download the envsphere, read the various pages and you must be able to use it

Thanks, I know BB's Envsphere, what I'm asking is how to add it only for speed purposes.

I can imagine that I have to turn off "visible on raytracing" or there's a shader trick in the Material Room.

That's what I need to know.

I'm not sure what you mean by "speed purposes" LOL. What most of use do is set up an empty scene, add the envirosphere, add our image of choice to the envirosphere and save that scene as the default scene in General Preferences. That way, everytime you start a new document, the envirosphere loads.

Laurie