ON THE UNION PACIFIC R.R. WEST OF WINNEMUCCA, NEVADA, MARCH 16, 2015
Sigma 18-250 f3.5-6.3 at 18mm
1/800 sec. f3.5
I can't tell whether that's mist rising from the desert at daybreak or just schmutz on the glass of the window in the last car of the California Zephyr. In either case, shooting with the lens wide open yielded a usable photograph.