hi, i have a simple question:
i rendered several images without any lamps or other lights, only the sun from windows and i noticed the images are so dark.

what im saying, i mean in the real world, when i stay in my room and the sunlight enter from the window, the average room light is much more than a lamp and i can see clearly and well illuminated all the room stuffs.

so why the ambient is so dark compared to the real world in the 3d rendered images?
http://imageshack.us/photo/my-images/703/234os.jpg/

with the advanced render is darker.
http://imageshack.us/photo/my-images/545/2332d.jpg/

what im doing wrong?