Specifications

11
Video Sensor Settings
Sensor Type: Interlaced and Progressive Scan
There are two ways to read image information from a camera sensor: interlaced scanning and
progressive scanning. Which to select depends on the purpose of the video system and whether the
video will be played back on analog monitors or on computer monitors.
• Use Interlaced Scan if the video is compressed at 30 fps and will be displayed on an analog
monitor. This will result in fluid video at 60 fields per second.
• Use Progressive Scan if the video will be viewed on a PC monitor.
Using Progressive Scan for video
that is viewed on an analog
monitor will result in movement
that is less fluid. Using Interlaced
Scan for video that is viewed on a
PC monitor will introduce some
artifact in video with motion.
NOTE: This setting is important
only if you are using 480 x 576
lines of resolution (NTSC/PAL):
4CIF, 2/3 D1, All Lines (HD1), or VGA.
Sensor Preset
To adjust image brightness, first use the appropriate predefined Sensor Preset based on the lighting
conditions in which a camera is being used. These presets are groupings of low-level parameters
relative to the luminosity and level of detail in the image.
Since these presets affect image brightness, they also influence dynamic range. The dynamic range of
a camera determines its ability to operate in variable light conditions and display very bright and dark
areas in one scene without missing important details.
The Sensor Presets:
• Normal: For interior or exterior scenes with a lot of detail and low contrast. This preset will
offer a medium level of dynamic range and should be appropriate for most environments.
• Indoor: For scenes with less luminosity and detail than Normal. This preset will offer a low
level of dynamic range, which means that image details will be unclear if a camera is aimed at
a window or in any other high-contrast luminosity condition.
• Outdoor: For scenes with more luminosity and detail than Normal. This preset will offer a high
level of dynamic range and can be used both indoors and outdoors effectively.
Another available setting is Fluorescent 2, but this is used only with interior tungsten fluorescent
lighting, when the electrical network frequency is 50 Hz and the video standard is NTSC. (Make sure
“Support NTSC in 50 Hz Environment” is set to On.) To activate the Fluorescent 2 setting, you must
Interlaced Scan video (left) appears blurry on a PC monitor, whereas
Progressive Scan video yields a clear, undistorted image (right).