Latest Praxis from "The Trainer":
For those who haven't heard of the "Killflash" or "ARD" (Anti-Reflection Device) for their binoculars or riflescopes, this is something you may want to consider when putting the 'finishing touches' on your field gear. They're comprised of a honeycombed lense cover that allows almost 100% light transmission but kills any glare or relfection from the objecive lense that may compromise the position of the person using the scope or binoculars. It won't keep water or dirt out of the lense area, but it will do what it advertises, and that's cut out any reflection. They're also made to be easily removed so you can clean your glass easily. And, should they get anything stuck in the honeycomb, it can be cleaned easily, too. And wonder of wonders, you can even lightly paint the Killflash to match your rifle, though I've not seen the need to do so. I've used the rifle scope version on more than one scope for years now, and have never had an observation impairment or wished I had more light transmission. They're very, very good!
10 years ago you could get Killflash lenses for various rifle scope objective sizes as well as binoculars. The demand wasn't high enough, apparently, because the available sizes almost disappeared. Well, now you can get both.
This is a quality piece of equipment, so they're not cheap. They start at around $40 for a rifle scope and are just under $60 per lense for binoculars. But they're worth it. Especially when you consider what remaining undetected will do for your life expectancy!
Here are two links that provide these weapons and observation device enhancements for your convenience, should you decide they (and your life expectancy) are worth the investment: