Lately, I have been photographing a lot of temples. One thing that is quite common is incense smoke, which I was almost never around before. After shooting, I noticed my lens gets covered in white dust. It comes off with a brush but it sticks to the lens and I missed some, so a little was left for a day or so.
Does incense damage lenses? If so, would a clear protective filter provide adequate protection? It will obviously protect the front but I am wondering is the incense would enter other places such as in the zoom or focus ring and focus switch.
My camera body is weatherproof, and so are most (but not all) of my lenses.
Can it cause damage to the camera too?