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PostPosted: Mon Jan 22, 2018 10:34 pm 
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I have deployed the trap in costal humid area .. all the nights shot have been lost because of mist on the lens and lens filter on the housing ..

Did any one encounter this issue ..and what is the solution to deal with this problem

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PostPosted: Mon Jan 22, 2018 11:58 pm 
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Location: Central Saskatchewan, Canada
I struggle with it every year setting up in low lying areas for elk at wallows... I hear your frustrations ... I have no answer but perhaps some one can help even if it’s a wee bit..


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PostPosted: Tue Jan 23, 2018 6:44 am 
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I am going to try this myself - a hydrophilic coating like the anti-fog gel used in dive masks.

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PostPosted: Tue Jan 23, 2018 8:21 am 
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This is on my to do list... It won't be power friendly but a small heating element around the lens should solve it. A small temperature/relative humidity sensor can turn it on/off so it keeps the surface of the lens above dew point. Again, on my to do list, so I've thought about it abstractly but not specifically. The biggest problem will obviously be power... Take a look at some of the astronomical lens heaters to see the types of stuff they use for solutions.


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PostPosted: Wed Jan 24, 2018 10:33 am 
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Yeah like Drew said the only solution seems to be a power hungry heating element, that you would probably run off a high capacity 12V battery and could perhaps extent with a solar panel. I have the same issues and I tried different glass coatings but when it gets real foggy nothing seems to help. I was reading somewhere that you have to be careful of trying hand warmers packs or stuff like that cause they can get too hot. I have the same issues where I currently live, it's a foggy, rainy valley, but luckily its temperate so I can still trap in the non-winter season. Hope you find a solution.

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PostPosted: Wed Jan 24, 2018 12:42 pm 
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Quoll wrote:
I am going to try this myself - a hydrophilic coating like the anti-fog gel used in dive masks.
Hey Quoll ... Does this gel disturb the optic quality of the lens? I'm not sure but any such coating or layer degrades the optics

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PostPosted: Wed Jan 24, 2018 3:54 pm 
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Sigma came out with water resistant filters and high end filters have a multicoating that is supposed to repel water I think. However, I don't think this sort of thing is enough to combat serious dew accumulation.

Underwater photographers are known to put Rain-x on glass dome ports for when they take split-level shots, to shed water (I've never tried cause I have an acrylic dome port and rain-x would melt it).

https://www.bhphotovideo.com/c/product/ ... gLvAfD_BwE

I wonder if Nayan Khanolkar or Sandesh Kadur might have some insight, the latter of the two is on Twitter and would probably respond. I know that for Planet Earth II they had glass filters on Kadur's camera trap housings and were in what looked like humid places.

good luck

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PostPosted: Wed Jan 24, 2018 9:54 pm 
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anjani.singamane wrote:
Quoll wrote:
I am going to try this myself - a hydrophilic coating like the anti-fog gel used in dive masks.
Hey Quoll ... Does this gel disturb the optic quality of the lens? I'm not sure but any such coating or layer degrades the optics

http://www.anjanikumar.net


It certainly makes visibility better underwater, and seems to not affect clarity when applied properly

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PostPosted: Thu Jan 25, 2018 11:45 am 
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JonnyA wrote:
Sigma came out with water resistant filters and high end filters have a multicoating that is supposed to repel water I think. However, I don't think this sort of thing is enough to combat serious dew accumulation.

Underwater photographers are known to put Rain-x on glass dome ports for when they take split-level shots, to shed water (I've never tried cause I have an acrylic dome port and rain-x would melt it).

https://www.bhphotovideo.com/c/product/ ... gLvAfD_BwE

I wonder if Nayan Khanolkar or Sandesh Kadur might have some insight, the latter of the two is on Twitter and would probably respond. I know that for Planet Earth II they had glass filters on Kadur's camera trap housings and were in what looked like humid places.

good luck
Hi Jonny .. thank you for the reply ..

The sigma glass should be of some help on the housing part .. but I'm not sure about how to tackle the mist forming in the lens itself because of the condensation within the lens and body. I saw some hot gel / body warmer packs but these would last only for 8-12 hours and would not suit long term deployment

Sure will try asking the guys u referred

Let see ..if I get any solution I will post it ..thank you guys



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PostPosted: Thu Jan 25, 2018 11:46 am 
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Quoll wrote:
anjani.singamane wrote:
Quoll wrote:
I am going to try this myself - a hydrophilic coating like the anti-fog gel used in dive masks.
Hey Quoll ... Does this gel disturb the optic quality of the lens? I'm not sure but any such coating or layer degrades the optics

http://www.anjanikumar.net


It certainly makes visibility better underwater, and seems to not affect clarity when applied properly
Thanks Quoll .. I have ordered one today lemme try it out

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