There was a recient post on glass fogging and it made me think of scope glass frosting up in the cold. I've been having this happen on occasion when i'm out coyote hunting in sub zero temps. If I leave my caps closed it doesn't happen, but if i leave them open on stand they start to ice up, both front and back lenses, so i know i'm not breathing on them. The scope is a Mark4. Any suggestions? Would the fog drops work for this as well?
xdeano
xdeano