The Meissen Cathedral has many interesting architectural details. When I was ready to leave one of the chapels and stepped into this spiral staircase, I knew immediately I had a picture. The light that came through the small window and from the room behind me was complemented with light from a small lamp in the staircase. The mix of daylight and incandescent light from the bulb were actually well taken by the camera (white balance was set to Auto), but I knew only the development of the photo in black & white will do justice to the subtle impact of all three light sources.