Hey Darth,
Your render looks really crisp and the trees look photo real even if under exposed. What settings do you go with for your atmo, and haze settings? The image looks like a photo. Im not talking about rocks and trees so much as I am the air between the camera and the horizon.
I have asked questions like this before but haven't got a great answer yet, probably to many variables. Still if you can be specific it may help.