The range of lighting is extreme when standing in the interior of a room and looking out the windows. The human eye is capible of seeing both together ~ the camera isn't capible of that range without adding additional lighting.
"There is not a single additionall source of light added to this room to create this image ~ only very calulated exposures. This method of photographing creates a very natural look that closely replicates what the human eye is able to see. My method also retains the designers' original vision of lighting design and isn't disrupted by a photographers room full of lights."