34 Phenomena specific to CCD image sensors
Phenomena specific to CCD image
sensors
The following phenomena that may appear in images are specific to CCD (Charge
Coupled Device) image sensors. They do not indicate malfunctions.
White flecks
Although the CCD image sensors are produced with high-precision technologies,
fine white flecks may be generated on the screen in rare cases, caused by cosmic
rays, etc.
This is related to the principle of CCD image sensors and is not a malfunction.
The white flecks especially tend to be seen in the following cases:
• when operating at a high environmental temperature
• when you have raised the gain (sensitivity)
Vertical smear
When an extremely bright object, such as a strong spotlight or flashlight, is being
shot, vertical tails may be produced on the screen, or the image may be distorted.
Aliasing
When fine patterns, stripes, or lines are shot, they may appear jagged or flicker.
Note on laser beams
Laser beams may damage the CCDs. If you shoot a scene that includes a laser
beam, be careful not to let a laser beam become directed into the lens of the
camera.
Monitor screen
Vertical thin tails shown on
the image.
Bright object
(e.g. strong spotlight, strong
reflected light, flashlight, the sun)
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