I think fog-free means they are resistant to some degree, as my Monarchs
don't fog anywhere near as much as the cheap binocs I used as a rank
beginner birder. But at some point they do fog when very warm humid
conditions meet cool surfaces. You can reduce this effect if you keep
binoculars at same temperature as outdoor air. Keep them in an
unconditioned garage maybe? Or keep them in a warmer spot indoors like on
top of the fridge.

Karen G.

On Wed, Jul 27, 2016 at 11:39 AM, Hayward Chappell <
[log in to unmask]> wrote:

> OK- probably dumb question, but I think I need clarification:
>
> I always thought "fog free" binoculars meant that the OUTSIDE of the lenses
> would not fog... so I bought Nikon Monarchs 7 which, like many other decent
> binocs state that they are fog free. However, when I take my binoculars out
> of my air conditioned house into this heat- they immediately fog up... so I
> thought that my binocular seals had been damaged and I need to send in for
> repair....
>
> BUT I have been reading sites that state that "fog free" DOES NOT refer to
> outside of lens fogging up- is that true?
>
> If so- does everybody have this problem with outside of lens fogging up no
> matter how fancy binocs are and is there any way to fix it?
>
> Seems like hear a bird I want to see- run inside and get my binoculars and
> then run outside only to have them fog up and by time they clear- bird is
> gone.
>
> Woe is me
>
> Hayward Chappell
> Lawrence County
>
> --
> Hayward Chappell
> 766 Private Rd. 3952
> Willow Wood, OH 45696
>
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