I undersand, but if somebody make a hdr light probe from many pictures merge together should know it and how it works so the light will show correct in the poser scene for example..this is not big problem using a mirror ball b/c you will get always everything right, but if you try to make it by creating a lad/long sphere map and convert it to a Light probe the attention of the directions are very important..
if you make many pictures in place of using a mirror ball start taking pictures always from the north side the way to east-south-west-and back to north this way by mering you will get correct sphere map that you can convert to light probe and use with poser.. this way the north would be always visible as background in the scene b/s we wanna get the light most on the front of the model and not only behind ( in some scenes it is fine but that is not the standard of the direction and your background would never match the light )

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