The modeling and Texturing are from Jeremy Brim, the lighting and compositing were made by me. I used Maya and Mental Ray, color correction, noise and ZDepth were made on Photoshop. For the shadows I used Raytrace Shadows. the objective of the exercise was to create day and night scene and play with the warm and cold colors.

Here is the Break Down for the day scene, I use 3 lights and a Surface shader; A directional Light to emit the sun rays, to Portal Lights and a the Surface Shader to give cold colors.