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Iridescence can be observed in a variety of places other than clouds. Here the sunlight on a cold damp morning has started to warm the shed roof, causing wisps of mist to rise from it. In very calm conditions coloured bands can sometimes be seen following the shapes of the wisps. The slightest breath of wind can spoil the effect. (This curl of mist was about 10 centimetres high) |
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Look through the wisps generally towards, but at a safe distance from the sun. Like many of these things the effect is much easier to see than it is to photograph. Lens reflections need to be avoided as they can easily introduce spurious colours. A darker background would also have been helpful here. |
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On the left of this image the mist is very thin with distinct colours while to the right the thicker mist just appears white. Larger droplets also catch the light to give tiny white spots, these are easily visible to the eye and give the mist a grainy appearance. |
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Canon EOS 20D 9th December 2005
Wiltshire, England
