Embrace the Blur! Long Exposure Class » Koepnick A 14-24mm DN 01
Long exposures layered of northern sky to form sky trails along Lake Poygan near Oshkosh, Wisconsin on April 27, 2020. Sigma 14-24mm Art DGDN lens on a Sigma fp camera. ISO 2000. f2.8 at 30 seconds for each of 80 exposures/layers. (photo by Jim Koepnick).