How to clean underwater housings dome ports

Cleaning your glass dome ports and lenses

* Every so often, your lenses and ports will need cleaned. Clean your lens glass carefully. Always blow off dirt and dust first with a blower, then a soft brush, before wiping it with lens paper. Otherwise you may scratch the glass. Always use lens paper or a lens cloth to wipe the glass. This also goes for ports and diopters. A put a few drops of lens cleaner on half of the lens tissue paper, and then I wipe the glass until it is clean. Then I wipe off the liquid with the dry half of the lens paper until the glass is dry.
* Always store lenses with the lens caps on when not in use.
* Try not to change lenses in dusty environments. Change your lens as quickly as possible to avoid getting dust on your sensor. When your camera does not have a lens on, your sensor should be facing down, to avoid dust falling on the sensor.