The modeling of this scene was very quick, for I wanted to focus on lighting, as always . It simply consists of some poles in a field, around a roughly shaped tank.

1. The funniest is : there’s only one light on this scene that suggests a raising sun and casts rather long shadows. The blue backlight seen on the tank and the robot is pure reflexion of the blue environment. Eventually, I used a strong blue fog to give the scene its overall color and to strenghten the tank agains the background.
2. Adding grass was an obvious choice to me, for it really catch the play of light.
3. As the final render seemed too blue, color corrections on high colors proved very useful to achieve a warmer lighting.