Once in the program you import a scene or model,there is sunlight setup allowing for location,time of day and cloud cover.A material bank containing some presets such as wood,floors etc and some simple objects you can use.The setup is fairly easy and the preview window will give you a pretty good idea how the scene is going to look.Render settings include radiosity and the main draw of the program is that it creates indoor and outdoor natural lighting well.
|5 Min (1280x720) render with hard shadows and high radiosity|
|Added soft shadows,7 Min render.Click images to enlarge.|
There is a couple problems in the program,there are only 2 render options (high or low) for anti aliasing and 3 similar settings for radiosity and adding additional lights slow the render time massively.The program also crashed a few times when changing basic settings on a low poly scene.
I'm still undecided on what i think of Atlantis,its certainly worth trying again though.