Here's an image I did featuring the "Gnarled Oak" tree from Floraworks (many thanks guys!). I wanted a simple image featuring the oak, with a nice sunny backdrop. The grass is from Lighting, but with a few shader tweaks.
Stats:
Res: 1024x786
Quality: 1
Render Time: 3h45m
Very minor post work in Photoshop: levels, color balancing, selective sharpening/blurring
For some reason, the oak was a bit on the dark side, but it seems to be isolated to his image only. I assume its just the lighting of the image itself.
Anyway, many thanks for looking. More to come.