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FORUMS Photo Sharing & Visual Enjoyment Wildlife 
Thread started 29 Jan 2010 (Friday) 17:43
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California Tiger Salamander

 
Schell
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Jan 29, 2010 17:43 |  #1

These guys are federally threatened and only occur in California. They are being threatened by habitat loss primarily, but are also threatened by a closely-related introduced salamander that is breeding with our endemics and swamping the native genotypes. This was a 6 second exposure taken at ISO100 and f13. C&C welcome.

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Jeremy87
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Jan 29, 2010 19:35 |  #2

why such a long exposure?


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Schell
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Jan 29, 2010 20:04 |  #3

Jeremy87 wrote in post #9500773 (external link)
why such a long exposure?


ISO100 + f13 + pitch black = 6 second exposure.


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5Dmaniac
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Jan 29, 2010 20:10 |  #4

I think the question was, why not use a higher ISO? Nice pic, he must have held very still for you.




  
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Schell
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Jan 29, 2010 20:26 |  #5

Because its not necessary with most amphibians - they stay still. Also my camera does NOT handle high ISO well at all. At 400 it is visibly grainy to the point where I have to throw them out and 200 doesn't buy me much in terms of a shorter shutter speed, so I just use 100 at all times.


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res
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Jan 30, 2010 06:54 as a reply to  @ Schell's post |  #6

Nice shot. I have been doing a bit this past summer using flash in the late evening with things like snakes and toads and having pretty good luck. Thanks for sharing. Rick




  
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1rushfan
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Jan 31, 2010 10:12 as a reply to  @ res's post |  #7

Very very nice. Such a prize to capture a disappearing species. It's amazing how changes in our environment, natural or not, can endanger something like this.


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Schell
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Jan 31, 2010 13:14 |  #8

Thanks for the comments. I deal with these guys on a semi-regular basis. The sad thing about this species is habitat loss is easy to track but trying to prevent the spread of the non-native/hybrid animals is really difficult especially when you have native and non-native animals occurring in the same pools. And don't kid yourself, it's all human threats - even the introduction of the non-native salamanders were brought here as fishing bait and released into the pools where the natives reside.


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Firefox190
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Jan 31, 2010 20:00 |  #9

Looks gooey! LOL!


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California Tiger Salamander
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