A photographer using a bright light to illuminate Double Arch in Arches National Park, Utah, on a dark night before moonrise provided natural illumination. Using bright lights to paint landscapes at night is common but often produces an artificial style of illumination.
This is a stack of 4 exposures, all 45 seconds at f/2.8 and ISO 3200 with the Canon 6D and 14mm Rokinon lens, with one frame supplying the photorapher and his illuminated landscape, plus the sky, with 3 other frames providing nose reduction in the dark portions of the landscape. The frames are part of a 250-frame time-lapse/star-trail sequence, shot April 7, 2015.
The Amazing Sky 