ZIESS conquest - black crap on the lens

[KFhunter]

Other day, lens on the ZIESS conquest went black.  Couldn't see through it. It was cold humid morning where optics would be prone to fogging.

This was like a coating of soot, I had to almost scrub the gunk off so I could see through it.  Anyone got a clue to what happened?

I wonder if the lens coating somehow had a reaction and went black 


Zeiss Conquest 4.5-14x50 AO MC w/ target turrets

[MtnMuley]

.....you dropped your cigarette ash on it while hiking in, and with moisture, it froze during your walk

[KFhunter]

actually it looked more like I held it in the exhaust of one of those rednecks dodge trucks that blow black soot out the exhaust



I don't smoke

[MtnMuley]

   I was just joking, lol

[KFhunter]

so messing with it, seems to be the backside of the lens going black when the temperature changes rapidly.

got to be a coating

[buckfvr]

Bad timing...........

[KFhunter]

Bad timing...........

you just buy one?

[elkaholic123]

I have same scope and never had that problem 

[KFhunter]

hasn't done it to me since that last time


was weird, like a coating had a chemical reaction to something and went black like rubbery soot. 

[CAMPMEAT]

Nitrogen leaking ?

[high country]

it probably fogged a lens. i had a swaro do that. it only did it once...but they repurged it for me.

[pianoman9701]

Send it in. They'll fix it or replace it. No need to mess around.