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Keywords:Sundog, Winter, Weather, 17-50 mm
Photo Info

Dimensions3384 x 2250
Original file size1.87 MB
Image typeJPEG
Color spaceUncalibrated
Date taken28-Jan-10 08:42
Date modified28-Jan-10 23:32
Shooting Conditions

Camera makeNIKON CORPORATION
Camera modelNIKON D300
Focal length17 mm
Max lens aperturef/2.8
Exposure1/640 at f/16
FlashNot fired
Exposure bias-2 EV
Exposure prog.Aperture priority
ISO speedISO 200
Metering modePattern
Sundog

Sundog

Sundogs are formed by plate shaped hexagonal ice crystals called diamond dust drifting in the air at low level. As the sun rises higher the rays passing through the crystals are increasingly skewed. This creates an atmospheric phenomenon that creates bright spots of light in the sky, often on a luminous ring or halo on either side of the sun.