Hi,
Where are the optical windows located?
Assuming the glasses are in fact air tight, just not purged, the dewpoint of the ambient air shouldn't matter, should it? Except of course that external condensation would confuse me when I'm looking for internal condensation.
Regards,
Henning
As to the Canon 10x42L, part of the problem is, as Kimmo says, that the optical windows are thin.
Where are the optical windows located?
Across the whole of southern England airfields the biggest difference between temperature and dewpoint is currently 6C. The smallest difference 1C.
Assuming the glasses are in fact air tight, just not purged, the dewpoint of the ambient air shouldn't matter, should it? Except of course that external condensation would confuse me when I'm looking for internal condensation.
Regards,
Henning