I recently bought a few expensive filters (100x100mm / 100x150mm). After a session of shooting in the beach the filters got wet, one from a splash and the other seems to be a bit wet because of the humidity.
I cleaned them by wiping them gently with a microfiber cloth, but, I can see that it is not absolutely clean.
Considering sea water contains salt, I wonder if it's best to wash the filters with fresh water first, wait them to dry and then, if needed, clean them with the cloth.
I also got a cleaning liquid for my PC screen, which came with a microfiber cloth and it works like magic. Will it be wise to use it on the filters too?
In case it matters, my filters are: Lee big Stopper, Lee ND/GND, Lee Polarizer, Singh-Ray GND Reverse, so some are made of glass and the others resin.
Another question regarding this microfiber cloth. I have the original cases of the filters. Most of them look like this:
and the big stopper case is:
Is it better to wrap the filters with microfiber cloth or it's better to keep them as they are in the original cases?