Whats the deal? I have a Leupold VXIII on my rifle and a zeiss conquest on my muzzleloader , both claim to completely waterproof and "nightrogen purged" to prevent fogging, however on openeing day, my 400$ zeiss fogged up in the rain, even with the scopecoat on it, and It took my 400$ leupold an hour to unfog after I left it in the car all night in 20 deg weather.

Is this normal? I would expect the glass on scopes of this price to stay clear , I feel ripped off. I shoulda kept my 200$ busnell 3200 with rain guard, it never fogged or blurred in the rain.