Quételet Rings in September 2018
During the long summer drought in 2018 many small creeks and rivers almost
dried out. This small river, covered with an algal film, showed subtle Quételet
rings. All images were processed and enhanced.
Leica CL, Apo-Vario-Elmar-TL 1:3.5-4.5 / 55-135 ASPH., 1/200 sec at f/5.6 and 125 ISO.
Links to related articles: