> Quote - Perhaps they didn't use IDL in those pictures? Perhaps there is no environment or, at least, no geometry right next to the pointlight's location.

Good points.  I actually considered them myself sometime after posting that screenshot, but by then it was too late to delete the post.

 

Quote - Inverse Square Fall-off is not completely "broken" as you put it, but rather it fails quite badly in certain particular circumstances (as I remember pointing out to you when you asked the same question elsewhere last week).

If it can't work correctly without some kind of a "patch job" by the user, then it's broken, and no one using Poser for the first time will be any the wiser about how to fix it without reading a thread like this one.  Nowhere in the Reference Manual does it say anything like, "By the way, Inverse Square doesn't work well with IDL enabled in some situations, so here are a few work-arounds you can try."

BTW - Sorry about cross-posting, I was just hoping one of our Poser gurus here at Rendo might have some answers.

Quote - 3) Put something black between the point lights and the ceiling (just in the places that are really close.) If you happen to "see" these objects because they are in the cameras view, then make them invisible to camera. IDL will "see" them, but the camera won't.

I was hoping not to have to try this, as it creates unwanted addtional work to position the square, especially if you have several point lights in a scenel using Inverse Square.  Nevertheless, it did work for the single light in my test scene (see screenshot), so thanks for the suggestion.

Unfortunately, I don't imagine it would work well with things like desk lamps, so your light shader would suffice in those circumstances.