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Archive 2012 · "Blue Eye"
  
 
Jefferson
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p.1 #1 · "Blue Eye"


I know what causes red eye (in photography), but what about blue eye?

Blurr result of hand held shot...slow ss...brown dog moved

Jefferson






  Canon EOS 5D    EF70-200mm f/4L IS USM lens    70mm    f/4.5    1/10s    1250 ISO    0.0 EV  




Jan 24, 2012 at 11:21 PM
AuntiPode
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p.1 #2 · "Blue Eye"


Looks to me like light scattering in the cornea. Is the dog old enough to have cataracts?


Jan 25, 2012 at 12:30 AM
Jefferson
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p.1 #3 · "Blue Eye"


AuntiPode wrote:
Looks to me like light scattering in the cornea. Is the dog old enough to have cataracts?


He's about 3 1/2 yrs., his eyes are fine

Here's the next shot...






  Canon EOS 5D    EF70-200mm f/4L IS USM lens    70mm    f/4.5    1/8s    1250 ISO    0.0 EV  




Jan 25, 2012 at 12:53 AM
AuntiPode
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p.1 #4 · "Blue Eye"


Because he's unlikely to have a cataract at age three, then light scattering by the tapetum layer seems more likely:

http://www.scientificamerican.com/article.cfm?id=why-do-dogs-get-blue-not

(Google is your friend.)



Jan 25, 2012 at 01:49 AM
Jefferson
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p.1 #5 · "Blue Eye"


AuntiPode wrote:
Because he's unlikely to have a cataract at age three, then light scattering by the tapetum layer seems more likely:

http://www.scientificamerican.com/article.cfm?id=why-do-dogs-get-blue-not

(Google is your friend.)



Good read, I've seen green and often gold, but had not run across blue untill now. I had thought that the green was the same effect as that from an IR beam on white paper and assumed what I saw was the IR component (like what you would see with night vision).

Blue I did not expect

Thanks for taking the time and providing an explanation. A couple of my nureons now have a new relationship

Jefferson



Jan 25, 2012 at 02:49 AM





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