Used to be nothing you could do to stop external fogging (moisture condensation) on a binocular. Oh, sure, you can always get a waterproof binocular to prevent fogging on the inside of the binocular and you can even get binoculars with hydrophobic coatings, such as Bushnell's Rainguard, which helps the lens to shed water during rain. Is there anything, though, that can keep binoculars from fogging up in cold weather? Maybe. I just picked up some Nikon Fog Eliminator. I will be trying it on some binoculars, but also my eyeglasses when I ride my bike during cold weather (I ride, even in the snow.) I will report back.

This post has been removed by the author. (Posted by  gawatson: 4:01 AM  )