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4. FEATURES
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Built-in 3x Varifocal Lens
Owing to a built-in auto iris 3x varifocal lens (f=3 - 9 mm), the angle of view can be adjusted.
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Adjustment Switch
The infrared camera is equipped with an adjustment switch that facilitates the manual adjustment of lens
focus. Turning on this switch forcibly makes the depth of field shallow, allowing finer focus adjustment.
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Day & Night Mode
By mechanically inserting and extracting the infrared block filter, the camera can function as a color camera
(day mode) in bright locations and as a high-sensitivity black & white camera (night mode) in dark locations.
The camera switches from day mode to night mode at a brightness level of approximately 2 lx, while night
mode switches to day mode at approximately 10 lx. There is a standby time of approximately 5 seconds
before the mode switches in order to prevent malfunctions resulting form momentary changes in brightness
(such as headlights).
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Internal Infrared LED Illuminator
The internal infrared LED illuminator lights in night mode and allows subjects to be viewed even in
environments where no lighting equipment is installed. The infrared LED's irradiation distance is as follows;
Indoor irradiation distance:
Approx. 18 m (59.06 ft.)
Outdoor irradiation distance: Approx. 15 m (49.21 ft.) (High-sensitivity switch OFF)
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Noise Reduction
Since the camera is equipped with noise reduction circuitry, it can pick up images with less noise even in
low-light scenes. Also, the camera's reduced noise permits video recording to be more efficiently performed
using a digital video recorder.
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Backlight Compensation
This function reduces the darkening of subject images due to backlighting.
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White Balance
Selection can be made of either automatic tracking white balance (ATW), which automatically adjusts the
camera's white balance as the subject's color temperature changes, or automatic white balance (AWB),
which keeps the white balance at the adjusted level.
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High-Sensitivity Function (Slow-Speed Shutter)
The camera's automatic gain control (AGC) operates when images become dark. However, if the image
remains dark, the camera's high-sensitivity function works to obtain a brighter image. This is done by
extending the light exposure time during which the electrical charge is stored in the image pickup device.
(After-image blurs may be produced by quickly moving subjects.)
