It seems like I'm pretty much hard-wired to augment all of my photos with flash. And while I could have easily corrected the exposure difference in post-production, I felt flash was the better way to go. Besides, I might learn something new. And I did, but it had nothing to do with flash.
The next shot (Photo #3) was made using an SB-700 aimed directed forward. A few things should be noted. First the color rendition was spot on (the walls are indeed off-white). But notice how the brightness decreases as the strobe to subject distance increases. You can see that the closer left wall is noticeably brighter than the far wall. One other feature is the relative lack of shadows. On-camera flash tends to flatten everything, and I will remember that if that's the effect I'm trying to achieve. The front-to-back variation in brightness does bother me.
Bad, Bad, Bad! I had sent the camera off when the first dust spot was discovered, and am now annoyed to find that another seems to have taken its place. I don't remember if I made a test photo to see that Nikon had done what they said (replaced the entire lens unit as it was supposedly sealed and couldn't be cleaned). This make me question whether the designers of the camera took invasive dust particles into consideration, though it appears they did not. Nikon appears to have been attempting to compete with the then new Fuji X-100 camera (APS sensor, 16 megapixel sensor), and ultimately produced a camera that couldn't cut it. During Christmas 2015, the cameras were selling for less than $300.00, an obvious move by dealers to rid themselves of this white (in my case black) elephant.
Right now, I'm surfing to see if I can find a reasonably priced unit. Once attached, I'll get that high speed synchronization I wanted in the first place, on a camera platform (Fuji) I appreciate more with each assignment.
February 6, 2016: By the time this is published, I will have received my Wide Angle Conversion Lens via eBay. As I have a Chinese New Year's celebration coming up, we'll see how it performs in the field.