Originally posted by Eagle94VT Does anyone know whether chlorine water drops cause lasting defects in filter coatings?
To have any appreciable effect upon glass and filter coatings the amount of free elemental chlorine present in the water would in all probability have devastating effects upon respiratory function* and cause chemical burns to skin.
Pool water, providing it is well maintained should be inert enough not to damage the filter coatings. Chloramine - which is that "pool water smell" you can detect is Ph neutral in solution, but it is still an oxidizer, so if your lens/camera get splashed give them a wipe down afterwards.
* While looking up some data on pool chlorine levels I came across a quack website offering water filters that "vibrate with the energy of the earth to purify your water" that website offered much amusement.