Here is an excellent tutorial by Canadium about instancing ot Proxy using Indigo Renderer. Indigo Renderer is an unbiased, physically based and photorealistic renderer which simulates the physics of light to achieve near-perfect image realism. You can download and find out more information about Indigo Renderer in their website by clicking HERE.
Here is the final scene done by Canadium.

Here is Canadium's Tutorial










Here is the final scene done by Canadium.

Here is Canadium's Tutorial









