The Story of Big Eyes
Uploaded: November 16, 2010
All dragonfly species have excellent vision. Each compound eye is comprised of several thousand elements known as facets or ommatidia. These ommatidia contain light sensitive opsin proteins, thereby functioning as the visual sensing element in the compound eye. But unlike humans, day-flying dragonfly species have four or five different opsins, allowing them to see colors that are beyond human visual capabilities, such as ultraviolet (UV) light. Together, these 30,000 facets produce a mosaic of "pictures" but how this visual mosaic is integrated in the insect brain is still not known.
Image taken with canon 100mm/F2.8 macro + 36mm extension tube.
Exif: F Number: 8, Exposure Bias Value: 0.00, ExposureTime: 1/125 seconds, Flash: fired, compulsory flash mode, ISO: 400, White balance: Manual white balance, FocalLength: 100.00 mm, Model: Canon EOS 400D DIGITAL
Bojan Bencic
December 13, 2010
0
Deborah Lewinson
December 14, 2010
0
Congratulations on your finalist!
Debby #9098765
Randy D. Dinkins
December 14, 2010
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Nancyj E. Hovey
December 14, 2010
0
OUTSTANDING MACRO, and a winner in my book! 8o) #9100458
Usman M. Bajwa
December 14, 2010
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UB. #9100796
paul parent
December 15, 2010
0
I love taking dragonfly pictures.
Quite a challenge.
C O N G R A T U L A T I O N S #9103619
Bojan Bencic
December 15, 2010
0
Deborah Lewinson
December 15, 2010
0
Nancyj E. Hovey
December 16, 2010
0
#9108670
Usman M. Bajwa
December 16, 2010
0
UB. #9109070
Cindy Bendush
December 17, 2010
0
Chris Budny
January 15, 2011
0
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