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Scopes Fogging

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tidmarshsmiths5 View Drop Down
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    Posted: December/18/2010 at 21:13
Every scope I look at...says "anti-fog" or some other marketing that means they are not supposed to fog up.

In defense of the scope, I was hunting a nasty day today...rain off and on...36 degrees with up and down to 39 and down to 34...but my Nikon Team Primos scope kept fogging up...there were more than a few times where if a deer had come out, I wouldn't have been able to shoot; scope was too fogged up.

The fogging was on the exterior lenses and not on the interior.

Anybody got any suggestions how to stop this? Other than the Elite Series with Rainguard?

I see that Nikon sells anti-fogging wipes...
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trigger29 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote trigger29 Quote  Post ReplyReply Direct Link To This Post Posted: December/18/2010 at 21:37
Uhhh. Use Nikon anti-fogging wipes.Bucky

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bugsNbows View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bugsNbows Quote  Post ReplyReply Direct Link To This Post Posted: December/19/2010 at 05:38
Also, there is a product called Parker's Perfect that works pretty well.
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tidmarshsmiths5 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tidmarshsmiths5 Quote  Post ReplyReply Direct Link To This Post Posted: December/19/2010 at 08:46
Originally posted by trigger29 trigger29 wrote:

Uhhh. Use Nikon anti-fogging wipes.Bucky


haha! that was funny and I knew it was coming...

Have to get some...they've got to be cheaper than a new Bushnell Elite 4200...
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RifleDude View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RifleDude Quote  Post ReplyReply Direct Link To This Post Posted: December/19/2010 at 21:22
When scope manufacturers say their scopes are "fog free," this means on the inside.  They are purged with dry, inert gas to prevent condensation on the inside.  There is no way to totally prevent fogging on the outside lens surfaces, however.  This is simply the result of rapid temperature changes causing condensation.  It happens to all optics.  
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Terry Lamb View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Terry Lamb Quote  Post ReplyReply Direct Link To This Post Posted: December/20/2010 at 10:19
Originally posted by RifleDude RifleDude wrote:

When scope manufacturers say their scopes are "fog free," this means on the inside.  They are purged with dry, inert gas to prevent condensation on the inside.  There is no way to totally prevent fogging on the outside lens surfaces, however.  This is simply the result of rapid temperature changes causing condensation.  It happens to all optics.  
Absolutely true...there is no defying the laws of physics. A scientific explanation, along with the best route for avoiding external fogging is located at:
 
 
 
Terry Lamb
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