Originally Posted by Helen B
Well as I work in glass, I have learned to carry 'clean' water with me, for those times that it required.
The cleanest water available may be more harmful that the water that has contaminated the filter..
Just my obeservation after several years of shooting in mineral laden water areas..
Looking at it from the perspective of someone who is expected to deliver the most clean glass that I can, I will take the extra precautions to ensure that my lenses and filters are as clean as possible.
Satin Snow Ground Glass