Dust or moisture under the protective lens is not a common occurrence, but can happen occasionally due to a deformed or improperly seated O-ring or protective lens.
Here is how to clean the lens on your camera:
1. With the camera upright and facing you, make certain the lens bezel is rotated to the far left so that the two alignment lasers are vertical.
2. Remove the small set-screw in the rotating bezel that holds the protective lens (it should be located on the right side of thee bezel). You will need a very small screwdriver to do this – like an eye-glasses screwdriver (drugstores often sell these if you do not have one).
3. With the camera lens pointing towards you, twist the bezel counterclockwise and unscrew it from the camera.
4. Remove the plastic protective lens from the bezel – it should easily just push out of the rear of the bezel.
5. Clean the plastic protective lens with a non-abrasive cloth and a small amount of water if necessary. Do *not* use commercial cleaning solutions on the protective lens, as this can corrode the plastic surface.
6. Locate and inspect the rubber O-ring behind the protective lens within the bezel. If the O-ring is missing or damaged, please contact support for further assistance.
7. If you have purchased a lens kit and are replacing your plastic protective lens, remove the protective plastic film from BOTH sides on the replacement protective lens. The film removes easily from one side and is a little more difficult to remove from the other side. Note that it is best (but not critical) to have the “more difficult side” of the protective lens facing outward. If you have difficulty removing the protective film, a razor blade or exacto-knife can be used to start the film removal process.
8. Place the new or existing protective lens in the bezel over the rubber O-ring. Be careful not to get fingerprints or dirt on the new protective lens and place it in the bezel.
9. Screw the bezel with the replacement protective lens back on the camera. Do not screw it on to the point that the optical lens on the camera rotates. Align the white mark on the bezel with the white mark on the left of the camera housing.
10. The hole for the set screw should now be on the right side of the bezel. You may need to slightly rotate the bezel one way or the other to get the set-screw hole on the bezel to line up with the hole in the camera.
11. Once the holes are aligned, reinstall the set-screw. You may have to push the screw in firmly to get it started.