Registan Square in Samarkand, Uzbekistan is illuminated beautifully at night. I took this wide angle shot, hand held, with a 16-35mm lens at 16mm. I had to raise the ISO to 1600 in order to obtain a fast enough shutter speed for a sharp picture. The shutter was 1/60, and I used f/4 for the aperture. Note that even with a large f/stop, everything is sharp. That’s because all the elements in the composition were far enough away from the shooting position that I could have complete depth of field at any aperture. The distant structure shows significant keystoning because I angled the camera upward at a severe angle to include the remarkable artistic detail of the arch. I used daylight white balance for this twilight photograph.