All of the cameras’ lenses are cleaned before they leave the factory. Sometimes a thin purple film can be seen on the lens. If this occurs, it just means that our cleaning solution wasn’t wiped off all the way. There’s an easy way to remove it.
Breathing gently on the lens to fog it up and then wiping with a gentle cloth is the most affective way to clean the lens. Repeat until clean.
We recommend against using a cleaning solution. If you use a cleaning solution, you run the risk of getting fluid into the lens system and it can take a very long time for the fluid to evaporate out. If there is any gap at all, around the lens/barrel interface, capillary pressure will suck fluid around the edge of the lens.