Fogbow from Skittenelv, Norway

August 29, 2011


: Ina Rendtel
Summary Author: Ina Rendtel; Jim Foster

This enchanting fogbow was captured in Skittenelv, near Tromso, Norway. Fogbows or cloudbows are similar to rainbows, but because fog droplets are only about one tenth the size of raindrops, most colors are washed out. As the droplet size increases, refraction of sunlight is more dominant than diffraction processes, colors become more obvious and the width of the bow narrows. In order to detect fogbows (or rainbows), the Sun must be no more than approximately 43 degrees above the horizon. Note the reflection of the bow on the water surface. If you move your chair away from the screen, you'll see that the bow and its reflection resemble a human eye. Photo taken on July 26, 2011 at 8:30 a.m.

Photo details: Camera Maker: Canon; Camera Model: Canon EOS 400D DIGITAL; Focal Length: 18.0mm; Aperture: f/11.0; Exposure Time: 0.0031 s (1/320); ISO equiv: 200; Exposure Bias: +0.67 EV; Metering Mode: Matrix Exposure: program (Auto); White Balance: Auto; Flash Fired: No (enforced); Color Space: sRGB.