I just got a PT-015 for the C-5050 and was thinking about using filters on it.
It has 67mm filter thread for screw on.
Is it a problem to screw on the filter before entering water?
Will water pressure be a problem since there is air space between the filter
and the housing? Or should the filter be attached when submerged?
What about the effects of sea water on the filter itself?
Have anyone experience damages or other effects on the filter.
Should I bother with multicoated filters for this application?
Or is it just a waste of time?
