ah, the scientific method! thanks for that confirmation dorelia.

I have been changing the U Scale. everything looks opposite now, but with a panorama one did not take (like The Pond) or is familiar with, how would you know what is correct?

This is important, obviously, because you want the light to be the same as the background.

Question: (and please forgive if answered above or is a 'stupid pupil' question). When you insert the HDRI light into the scene, if you do it from the library, are you supposed to accept the position it places the light? Does it make any difference? Where should the diffuse IBL light with the HDR file attached, be placed to equal the scened attached to the inside of the dome with -U?

Also, when the light is loaded from the Poser library, it inserts a "specular only" light. Is this correct, normal and properly positioned?

::::: Opera :::::