Cleaning optical components
201
Manta Technical Manual V7.9.0
When screwing or unscrewing the camera lens or dust cap, hold the camera with
the lens mount opening towards the floor. This minimizes the possibility of any
contaminants falling on the glass surface. Always store cameras and lenses with
dust-caps on.
Identifying impurities
If you observe any image artifacts in your video preview of your Manta camera you
may have impurities either on the lens, filter/protection glass, or on the sensor
protection glass. Every Manta camera is cleaned prior to sealing and shipment;
however, impurities may develop due to handling or unclean environments.
As shown in the figure below, impurities (dust, particles or fluids) on the sensor or
optical components appear as a dark area, patch or spot on the image and remain
fixed in the preview window while you rotate the camera over the target.
Do not confuse this with a pixel defect which appears as a distinct point. Particles
can either rest loosely or can be more or less stuck to the optical surface.
Figure 121: Illustration of camera orientation when removing lens or dust cap
Figure 122: Image with tiny dust on the filter (left) and dust on the sensor (right)
