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Home > IP versus analog cameras -- what are the advantages and disadvantages of each?
October 17, 2006
By: Lynn Bryant
If you are looking to install a security surveillance
system in your home or business, one of the decisions you
have to make is whether to go with an IP or analog camera.
Deciding on IP versus analog cameras is not necessarily a
simple decision as there are advantages and disadvantages to
each style of camera. We will explore some of these
differences more in-depth so you can determine which option
is right for you.
The main difference between the two camera types is the
way in which the video signal is delivered. Analog cameras
turn the video signal into a format that can be received by
a television or other receiver such as a VCR or monitor. An
IP-based camera, also known as an IP network camera,
digitizes the video signal using a specialized encoder that
contains an onboard web server. This allows the IP camera to
act as a network device, thus allowing captured video images
to be viewed not only through an existing network but also
through a web browser that can be accessed through the
Internet.
Both analog and IP-based video cameras can transmit
signals either wirelessly or through wired connections such
as Cat-5 cables. IP-based cameras have the added benefit of
being able to use switches, hubs, and routers that allow the
Cat-5 network to be expanded to much broader ranges. In
order to determine which style camera system is best suited
to your needs, let us take a closer look at some of the pros
and cons of each style.
Pros of analog cameras
- Lower cost -- Analog cameras generally cost
less to purchase than IP cameras.
- Greater flexibility of design -- Analog cameras
often come in a larger variety of designs such as mini
covert cameras to large PTZ models. If you have unique
surveillance needs you may find it easier to find the
style of camera you need in an analog model.
- Superior compatibility -- It is much easier to
mix and match cameras and brands if you use analog
versions. This can make it easier if you already have
existing camera equipment that you wish to incorporate
into your surveillance system.
Cons of analog cameras
- Lack certain features -- Many of the basic
analog cameras often lack some of the more advance
features such as digital zoom.
- Potential interference problems -- If you are
installing a wireless surveillance system, analog systems
can have interference problems. More importantly, the
resulting signals cannot be encrypted. This can
potentially mean that someone else can view the signal.
- Long distance applications are more difficult
-- If your surveillance needs encompass a wide area,
analog cameras may not be your best choice. Analog cameras
generally do not accommodate big distances, and getting
them to work over broad ranges can be difficult.
Pros of IP cameras
- Better wireless reception -- IP cameras have
encryption built right into them providing for a more
secure network. Interference is also not a problem with
IP-based models.
- Can utilize existing wiring -- Because IP-based
cameras act as their own network device, you can often
take advantage of existing network wiring within your
home. This can make the installation task much easier.
- Remote access can be easier -- IP cameras are
better suited for remote surveillance needs.
Cons of IP cameras
- Higher cost -- Because of the additional
technology that is built into each camera, the cost is
generally higher that analog versions.
- Higher bandwidth required -- IP cameras require
more bandwidth than analog cameras.
Given the pros and cost of each camera type, the decision
really comes down to your specific surveillance needs. With
an accurate assessment of your needs, the decision of which
camera type to go with will become much easier.
About the Author
Lynn Bryant is a successful freelance writer and
contributor to Video-Surveillance-Guide.com. Your
definitive guide to video surveillance equipment, CCTV
cameras and wireless security systems for home and business.
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