sbt.... yeah.. it was a scraggly bush.. one a separate vue topic.. it seems from my searching that you can use your vue scenes to create ibl's.  i'm watching a series of beginners tutes from geekatplay to learn how to use vue.. but i'll go to the hdri tute when i'm done to see if it includes lighting info and everything that you need to use an ibl as a light source in reality/lux.  it would be super cool to be able to make a really cool and unique scene and then use it as an ibl in lux.  i don't know yet if it can do that but i'll keep the thread posted.