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Mexican Amberwing dragonfly obelisking...

 
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twebster
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Joined: 19 Apr 2004
Posts: 1518
Location: Phoenix "Valley of the Sun", Arizona, USA

PostPosted: Sun Jul 09, 2006 10:52 pm    Post subject: Mexican Amberwing dragonfly obelisking... Reply with quote

Hi y'all, Very Happy

What the heck is "obelisking" Question Very Happy It's just a descriptive term used for dragonflies pointing their hind ends towards the sun... Very Happy


Mexican Amberwing Dragonfly (Perithemis intensa) Canon EOS Rebel XT with Canon EF 70-300mm IS lens set at 300mm, 25mm extension tube, ISO 200, 1/125 sec @ f 13, natural light, handheld with IS turned on.

"Obelisking" helps the dragonfly regulate its body temperature when things start heating up. By pointing their hineys at the sun the dragonfly exposes the minimum surface area of its body to reduce heat absorption. I'm going to try that myself tomorrow when I go shooting at the Desert Botanical Gardens. Do you think anyone will notice Question Shocked

Best regards to all as always, Very Happy
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Ken Ramos
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Joined: 04 May 2004
Posts: 4809
Location: Western North Carolina

PostPosted: Mon Jul 10, 2006 2:39 am    Post subject: Reply with quote

Nice image Tom. Very Happy I have heard of an obelisk but not obelisking. Some folks have a behind so big it could cool an entire neighborhood Laughing An interesting fact though, didn't know that. Very Happy
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Beetleman



Joined: 02 Apr 2006
Posts: 362
Location: Southern New Hampshire USA

PostPosted: Mon Jul 10, 2006 8:12 am    Post subject: Reply with quote

Those Dragonflies are very beautiful Tom, as are your photos of them. I would guess that every animal out there needs to regulate their body temp.
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rjlittlefield



Joined: 06 May 2005
Posts: 727
Location: Richland, WA, USA

PostPosted: Mon Jul 10, 2006 3:51 pm    Post subject: Reply with quote

I really like this shot. Great colors, great sharpness, and the shape and gradation of the background is a really nice complement to the dragonfly.

I'd say the whole picture is "pretty close to perfect", but I don't have a clue what could be improved!

--Rik
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