How can I create synthetic imagery (rendering) of LEGO models?
You need:

Digital Designer (Or anything that can produce Ldraw files, there are some listed in this question)

Blender (Or another renderer that supports Ldraw)

Blender Script (This is necessary for Blender to read you Ldraw models)


Recreate your creation in Lego Digital Designer.
Export as Ldraw format
Import in Blender
Create &amp; render Blender scene


(I haven't tried but it should work)