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Author Topic: Fish eyes  (Read 3598 times)

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Fish eyes
« on: March 15, 2011, 12:18:01 AM »
Took these shots yesterday, all shot reeled off one after another from the same position.

Check the eyes, not sure what's happening there but pretty confident in saying that I've never noticed it before.

Anyone have any idea???














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Re: Fish eyes
« Reply #1 on: March 15, 2011, 06:53:16 AM »
Max Garth from WA has posted about the effect of a flash on Barra's eyes. 
I have plagerised the paragraphs below.  I don't know if this is fact or not.

Barra have a reflective eye, and when pics are taken with flash, the eye comes up as very bright or normal depending on whether it is in grey scale, black/white visual mode, with the tapetum lucidum operating, or normal with the colour vision operating.This depends a lot on time of day, water clarity,etc.
There was some scientific stuff done on barra vision in Qld. Might be on a university web site in Qld.
Generally speaking you can get an idea of what mode the barra is in, if you take a pic with flash, and using a digital camera, have a geek at the result and get the colour or not visual mode information.  This then gives you an idea on fly colour, with grey scale, colour doesn't matter but it will if the fish is in colour mode.

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Re: Fish eyes
« Reply #2 on: March 15, 2011, 08:39:11 AM »
Not sure about colour modes, I thought it may just be the pupils reacting to the flash.

Cheers Andrew

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Re: Fish eyes
« Reply #3 on: March 15, 2011, 09:14:37 AM »
Max Garth from WA has posted about the effect of a flash on Barra's eyes. 
I have plagerised the paragraphs below.  I don't know if this is fact or not.

Barra have a reflective eye, and when pics are taken with flash, the eye comes up as very bright or normal depending on whether it is in grey scale, black/white visual mode, with the tapetum lucidum operating, or normal with the colour vision operating.This depends a lot on time of day, water clarity,etc.
There was some scientific stuff done on barra vision in Qld. Might be on a university web site in Qld.
Generally speaking you can get an idea of what mode the barra is in, if you take a pic with flash, and using a digital camera, have a geek at the result and get the colour or not visual mode information.  This then gives you an idea on fly colour, with grey scale, colour doesn't matter but it will if the fish is in colour mode.

Saw something like that on a site recently Dale, hence it pricked my mind when I saw it.

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Re: Fish eyes
« Reply #4 on: March 15, 2011, 04:55:46 PM »
Very interesting  :)

Any chance of posting a link up to that post Dale?  :thanks

Adrian

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Re: Fish eyes
« Reply #5 on: March 16, 2011, 06:43:15 AM »
That's all he had to say on it.  I've googled looking for a University study and cannot find it.

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Re: Fish eyes
« Reply #6 on: March 16, 2011, 08:01:53 PM »
Dick,
I think she is winking at you, maybe she likes you
 ;D

 

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