Here’s a quick tutorial on an HDR control node in Blender. The point is to be able to control the background intensity and the lighting separately. It also gives you the option of having separate background and lighting.
Curtis Farnham (http://curtisfarnham.com/lego-spacex) has kindly put his Lego plans for a Falcon 9 on his website. A bit of LeoCad later and the model is in Blender. I wish I had all the Lego parts to actually make this.
Incidentally, I had to start learning Python to get this model working in Blender. Perhaps I’ll polish the code up and publish it here at a later date.