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| The Infrared Security Camera In The Spotlight
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There seems
to be a little confusion surrounding the infrared security camera. Seems like
most folks get them confused with day/night time security cameras. This article
will explain the role of the infrared security camera and it's ability to see in
the dark.
The infrared security camera is like the cat of the camera
world. Like it's feline counterpart, infrared cameras can turn any night into
day and have become a big part of both military and law enforcement operations.
Now, infrared is playing it's role in keeping home intruders at bay.
Did
You Know?
Not all infrared security cameras are created equal. There is a
rating figure assigned to these cameras and the closer to the rating 0 they get,
the better performance at night they produce. Obviously with a rating of 0, a
camera is the antz pantz of infrared cameras and will be able to see and display
better in darkness than a camera with a higher number rating.
Let's take
a look at what an infrared security camera actually is.
This camera has
infrared lighting which is light from a different region than we would normally
use to see the electromagnetic spectrum. The infrared lighting is installed
outside of the camera's lens and allows it the ability to capture good images in
total darkness. In low light the picture captured by infrared cameras can look
like one captured in day time.
These "electronic creatures of the night"
don't really emerge in the light of day and obviously perform their best work in
dark conditions. Either outside, for night time viewing or for businesses that
at night have the lights out, the infrared security camera cuts through non lit
areas with accurate precision.
One thing you should remember is that even
during night time light is still emitted from the stars, moon or street
lights so total darkness situations are rare. Infrared cameras are often
referred to as night Vision cameras because obviously at night they can
be? However night
Vision and day/ Night Cameras are not the same thing. They are different. Day/
Night cameras it must be pointed out don't have infrared lights built
in.
Are They Effective In Outdoor Housing?
Infrared security
cameras, as a rule, don't do well in outdoor housing because the reflection from
house glass is reflected off by the infrared light. Sometimes, acceptable
results can be achieved through reducing the glare by positioning the camera up
to the glass. In this situation though, a day/ night camera with an extra
sensitive imaging chip that can capture a good picture is usually sufficient
without using infrared lighting. This works particularly well if you have an
outside light that you can leave on at night. Even outside street lights aid
them in this case.
Understanding Lux and Resolution
Despite their
great effectiveness in night conditions, no camera without infrared lighting
will capture an image with zero light. The camera's lux refers to the level of
light needed for a good picture to be captured; a lower the lux, the better the
camera can see in the dark. If a camera has 0.004 lux and another one 0.1, the
former is better than the latter.
The infrared security security camera
is obviously a wonderful asset to have during times of very little light. They
act as "the eyes in the dark" of those who possess and rely on them to produce
images at night. They are another weapon in the fight against home
intrusion.
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