Fig. 28: The most beautiful photos in twilight are taken when the sky still contains some residual light and stands out well from the horizon, but is no longer so bright that the illumination is outshone. Although this is called "the blue hour", it often only lasts a few minutes, depending on latitude and time of year. — EXIF: Nikon D200; Δt=10 s; f=19 mm; f/11.0; ISO 100; 2009-11-11 12:00:15
