There are two situations needing cleaning:
Fine condensation on outside of lens due to coldglass ad warm sweating body in wet weather. Specially happens if drops of water get inside your scope covers. I use a small 5x5cm square of clean chamois cloth for this but microfibre or lens paper is ok too.ive found antifog spray and water beading stuff doesnt prevent this. Larger raindrops are also a problem but build up slowly. When youve got water on your lenses its urgent and youve gotta fix it ir you cant shoot and may as well be at home watching Utube.
Run out of time. Will post about the other situation if i get back to it latr.
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