Air Photo Air FreePhoto Free Download ▾ 4451 x2273 2560 x 1307 1920 x 980 1280 x 654 800 x 409 4451 x2273 2560 x 1307 1920 x 980 1280 x 654 800 x 409 License: Free for personal and commercial use. Not for sale or redistribution. Appreciation not required but appreciated. Facebook Twitter Camera: Canon EOS 40D 50/1 mm f/4.5 1/2500 s 100 ISO sunrise sky smoke air clouds environment carbon industry mining steam toxic factory fog pollution chimney industrial plant loneliness smog power plant evening sky environmental protection exhaust ruhr area disposal duisburg rhine Colors: