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Meopta and fogging
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muleymaddness View Drop Down
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Posts: 27 		  Quote muleymaddness Quote  Post ReplyReply Direct Link To This Post Topic: Meopta and fogging
    Posted: November/07/2009 at 12:54
Anyone had any issues with the Meopta binocular fogging up on the lense closest to your eye?  It quickly disipates, but is rather annoying.  I didn't even think the weather was too humid to be fogging up this easy.
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Roy Finn View Drop Down
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Posts: 2725 		  Quote Roy Finn Quote  Post ReplyReply Direct Link To This Post Posted: November/07/2009 at 13:11
Are you referring to exterior fogging?
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Posts: 103 		  Quote cajunhunter Quote  Post ReplyReply Direct Link To This Post Posted: November/07/2009 at 13:53
All glass has some external fogging.  If you clean them with some anti-fogging stuff it helps. 
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RONK View Drop Down
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Posts: 2949 		  Quote RONK Quote  Post ReplyReply Direct Link To This Post Posted: November/07/2009 at 16:29
 It's probably the moisture from your breath condensing on the colder lens surface.
 It will occur in cool weather.
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Klamath View Drop Down
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Posts: 259 		  Quote Klamath Quote  Post ReplyReply Direct Link To This Post Posted: November/07/2009 at 17:55
It can also come from the heat coming from your face (without coming close to breathing on the lens) if it is wet and cool enough, or from the heat from expelled breaths rising past the ocular, even if you don't breathe on the lens.  I tend to be a bit of a hothead in this regard and sometime have this happen with me.  One thing that will help is (especially if you are perpetually plagued with this problem) is to choose 6-7x binocular with lots of eye relief, so when the eye cup is extended it keeps your face a bit further from the ocular lens.  Doesn't help much I suppose if you have to wear glasses, which I don't.
 
We loose a lot of body heat through our heads, so sometimes when it is cold, we can tend to trap heat around the face by bundling up against the chill.  The trick is to find a balance so you can keep warm enough but not collect too much heat around your head.
 
I would not suspect a Meopta to be either more or less susceptible to this than another binocular.


Edited by Klamath - November/07/2009 at 17:56
Steve
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RONK View Drop Down
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Posts: 2949 		  Quote RONK Quote  Post ReplyReply Direct Link To This Post Posted: November/07/2009 at 20:02
Originally posted by Klamath

It can also come from the heat coming from your face (without coming close to breathing on the lens) if it is wet and cool enough, or from the heat from expelled breaths rising past the ocular, even if you don't breathe on the lens.  I tend to be a bit of a hothead in this regard and sometime have this happen with me.  One thing that will help is (especially if you are perpetually plagued with this problem) is to choose 6-7x binocular with lots of eye relief, so when the eye cup is extended it keeps your face a bit further from the ocular lens.  Doesn't help much I suppose if you have to wear glasses, which I don't.
 
We loose a lot of body heat through our heads, so sometimes when it is cold, we can tend to trap heat around the face by bundling up against the chill.  The trick is to find a balance so you can keep warm enough but not collect too much heat around your head.
 
I would not suspect a Meopta to be either more or less susceptible to this than another binocular.
 
 Very well-explained.
 If you can do so, keeping the ocular lenses very warm just prior to using them should also help, as it would not condense the vapor until the lenses cooled down enough.
 
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muleymaddness View Drop Down
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Posts: 27 		  Quote muleymaddness Quote  Post ReplyReply Direct Link To This Post Posted: November/07/2009 at 22:07
Thanks for the replies.  I guess it would have to be from the heat from my head.  This morning I was using them and it was probably 50 degrees with some humidity in the air and they were fogging at first.  Probably they were at first is because I was warmer at first and finally cooled down.  Good explanations though.
 
What would you recommend I put on the lense to help some of the fog?
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Roy Finn View Drop Down
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Posts: 2725 		  Quote Roy Finn Quote  Post ReplyReply Direct Link To This Post Posted: November/07/2009 at 22:44
There are two different products designed for that I know of, one is Parker's Perfect and the other is called No-Fog.
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stephen b View Drop Down
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Posts: 1 		  Quote stephen b Quote  Post ReplyReply Direct Link To This Post Posted: November/08/2009 at 17:11
2nd parkers perfect; have used it on my eye glasses for years and it really works well.

 Stephen
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lucytuma View Drop Down
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Posts: 2440 		  Quote lucytuma Quote  Post ReplyReply Direct Link To This Post Posted: November/10/2009 at 18:51
I'll have to look into this parkers perfect stuff, thanks for the info.
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ccoker View Drop Down
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Posts: 567 		  Quote ccoker Quote  Post ReplyReply Direct Link To This Post Posted: November/10/2009 at 20:16
I had the same thing happen over the weekend with my Nikon Monarch 8.5x56 in the morning, very, very humid and not cold
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