Ocular sparks in the laboratory (video) from Controlled iris radiance in a diurnal fish looking at prey
2018-02-20T05:21:21Z (GMT) by
This clip shows a red and blue ocular spark under the laboratory conditions of the experiment. The ambient light consisted of one blue LED source above each tank (one fish per tank). Videos recorded using a Nikon D4 with a 105 mm macro lens through a LEE spring yellow filter by N.K.M.