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°red eyes°°


°red eyes°°
Información de la foto
Copyright: Sergio Stella (flashpoint) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 630 W: 133 N: 4324] (28008)
Género: Animals
Medio: Color
Tomada el: 2008-06-03
Categorías: Insects
Cámara: Nikon D40X, AF-S MICRO-NIKKOR 105mm f/2.8G ED
Exposición: f/8, 1/125 segundos
More Photo Info: [view]
Versión de la foto: Versión original
Fecha enviada: 2008-06-08 2:39
Vista: 2682
Puntos: 2
[Normas para las notas] Notas del fotógrafo


The compound eyes of Dragonfly


A compound eye is a visual organ found in certain arthropods. The compound eye consists of between 12 and 1,000 ommatidia, little dark/bright sensors. The image perceived by the arthropod is "recalculated" from the numerous ommatidia which point in slightly different directions. In contrast to other eye types, there is no central lens or retina. Though the resulting image is poor in resolution, it can detect quick movements and, in some cases, the polarization of light. Dragonflies have about 30,000 facets to their compound eyes, giving them nearly a 360° field of vision.

Make: NIKON CORPORATION
Model: NIKON D40X
Software: Paint Shop Pro Photo 11,20
Exposure Time: 10/1250 sec
F-Stop: f/8.0
ISO Speed Ratings: 800
Focal Length: 105 mm
Date Taken: 2008-06-03 19:02
Metering Mode: Pattern
File Size: 85 kb


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Para sweet_universe: red eyesflashpoint 1 06-13 15:03
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Ne fai una più bella dell'altra...
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