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Phenomena Specific to CCD Image Sensors
5
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)
• when using the slow shutter
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.
How to Use This User’s
Guide
This User’s Guide explains how to operate the SNC-
Z20N/Z20P Network Camera from a computer.
The User’s Guide is written to be read on the computer
display.
As this section gives tips on using the User’s Guide, read
it before you operate the camera.
Jumping to the related page
When you read the User’s Guide on the computer
display, click on the sentence to jump to the related page.
Software display examples
Note that the displays shown in the User’s Guide are
explanatory examples. Some displays may be different
from the ones which appear as you operate the
application software.
Printing the User’s Guide
Depending on your system, certain displays or
illustrations in the User’s Guide, when printed out, may
differ from those as portrayed on your screen.
Installation Manual (printed matter)
The supplied Installation Manual describes the names
and functions of parts and controls of the Network
Camera, connecting examples and how to set up the
camera. Be sure to read the Installation Manual before
operating.
Monitor screen
Bright object (e.g. strong
spotlight, strong reflected
light, flashlight, the sun)
Vertical thin tails shown on the
image.