Posts Tagged ‘ dome camera ’

Bullet Security Camera

Friday, September 2nd, 2011

There are basically three types of digital video cameras:  1) The dome camera; 2) The box camera; and, the bullet security camera.  In this article we are going to focus our attention on the bullet security camera.

The bullet camera is versatile in its own way as a matter of function of how it is made.  In other words, there are some features on bullet security camera that are definitely beneficial that come as standard on bullet cameras that may require extra charges to have on other type cameras.

For example, just about every bullet security camera is indoor/outdoor; no special housing is required as it comes already housed.  This is a money saving feature compared to a box camera which requires that you buy a separate housing.  Many bullet cameras are set up for infrared video imagery and that includes the InfraRed Light Emitting Diodes or IR LEDs placed in an array around the lens; again standard feature for a bullet camera.

One downside to a bullet camera is that they are not vandal proof.  That is, they can easily be repositioned, so you must consider at what height and location you’ll want to install the bullet security camera.

Security Camera King has a wide range of bullet security cameras from 420 TVL to a whopping 700 TVL that provides the industry ultimate in resolution.  These cameras are normally encased in a metal housing (usually aluminum), come with their own board lens (factory installed and fixed to the circuit board), are infrared ready, and usually have anywhere from a few to 23 or more IR LEDs scattered in an array around the lens.

We have a total of eight bullet security cameras on our bullet camera page.

As you can see there is a wide range of bullet security cameras to choose from at outstandingly low prices.  These cameras are pretty versatile when you consider the features and options that are available.  The cameras are all weatherproof but they are all indoor cameras as well.

If you are interested in purchasing a bullet security Camera or need more information about it, contact one of our security experts today via “Live Chat” or telephone at 866-573-8878 Monday through Friday from 9AM until 6PM EST.


IR Bullet Camera

Monday, May 2nd, 2011

When looking for versatility in a digital video security camera nothing may offer you more than an IR bullet camera (InfraRed bullet camera).  Among the most popular types of cameras these days, the IR bullet camera usually comes packed with dozens of extra features, thanks to modern technology.  In the following article, we’ll take a look at digital video security cameras and how they work and especially how an IR bullet camera works.

There are three major types of digital video security cameras based on shape; the box type, the dome type, and the bullet type.  For many years the favorite has always been the box type.  Although box type cameras are somewhat obtrusive, they are versatile because you must purchase the lens separately, which allows you to change the field of view characteristics when ever you want.  Also, box type cameras are intended for indoor use, but can easily be converted to outdoor use by placing the camera in an outdoor rated housing.

Next in line is the dome camera.  Dome cameras are used indoors or outdoors but it seems as though the majority of their applications lean toward indoor installation and mounting.  These camera are fast becoming competitive with box cameras because they are small and unobtrusive, versatile with many features, and are easy to mount to the wall or ceiling.  Dome cameras can be purchased as indoor, outdoor, or indoor/outdoor models.  The can also be sold as vandal proof because once they are properly mounted on the ceiling it would be very difficult for a vandal to change the position of the camera.

Finally, there is the IR bullet camera or just a plain bullet camera.  They are so called because their shape resembles the shape of a bullet.  Bullet cameras may be mounted in several different ways.  Regardless if they are mounted on the wall or ceiling, bullet camera mounts normally have a bit of an extension arm that aids in getting the camera in the exact position you desire.  The down side to this is that the camera can become vulnerable to vandalism because it can be easily repositioned.

Now that we’re familiar with the types of cameras, let’s talk a little bit about how they work.  As a matter of fact, all three types of cameras produce digital video images in the same manner and this is how they do it.

The lens’ job is to gather the reflected light from images in it’s field of view, and focus them onto a very small censor chip (the chip ranges from 1/4 to 1/2 square inch).  The sensor chip is a high specialized electronic chip that can convert light energy into electrical energy.  The electrical energy can be measured and the values used to recreate the actual image as a digital video image on an electronic display monitor.

There are two different sensor chips that may be used and although they may go about producing the video image differently, the both produce the same result; digital video images.  The names of these sensor chips are the Charged Coupled Device or CCD and the Complementary Metal Oxide Semiconductor or CMOS.

These sensor chips are incredibly interesting because they possess an unusual trait.  They both are sensitive to near infrared radiation.  This is the type of radiation that is given off by TV remotes, DVD players, etc.  It is harmless to humans but even better for the security camera industry, it is completely invisible.  Therefore, it could be pitch dark and the camera can still produce a video image as if a spot light were shining in its direction.

It does this by the use of InfraRed producing Light Emitting Diodes or IR LEDs.  Generally, the more LEDs used to produce infrared “light” the longer the range of the camera in total darkness.  This is where the bullet camera comes in.

Due to its shape an IR bullet camera can really pack a large array of IR LEDs around its lens.  Some camera boast as many as 78 or more and a range if 300 feet.

To summarize, the IR bullet camera is a versatile digital video security tool.  It provides the same quality video as box camera but doesn’t require an additional housing.  It provides the capability for IR imagery like a dome camera but it has a much longer range potential due to the size and shape of the camera.


Auto-Tracking Dome Camera

Wednesday, April 27th, 2011

Have you tried an auto-tracking dome camera?  Be careful if you do because once you get hooked on them, it is pretty difficult to keep you from getting more.  These cameras represent some of the highest quality electronics available today.

What is an “Auto-tracking Dome Camera?”  It’s a special type of PTZ (Pan-Tilt-Zoom) camera that can lock onto moving objects and follow them where ever they go (within line of sight to the camera).

To use such a camera you first need to install it, and then set it up, and finally let it work so you don’t have too!  Auto-tracking Dome Cameras have circuitry built right in that allows them to recognize a moving object, get a lock on the target , and follow it until it leaves the area of the Field of View for the camera.

This is particularly useful if you require constant live monitoring of your security system.  For example, if you were using this camera in a parking lot, not only could you set it to watch cars come and go, but it could even track the people getting out of the cars.

Security Camera King offers two different auto tracking dome cameras, both made by Veilux.  Product# VP-ATDNC27X has an optical zoom of 27X and an additional digital zoom of 10X.  This means the total zoom effect attainable with these cameras would be up to 270X.  In addition here are some of the features of this camera:

  • 520 TVL high resolution output;
  • Minimum illumination is 1.0 Lux for day mode and .5 for night mode;
  • Automatic stabilization of images by reduced flicker;
  • Motion tracking, Intelligent Surveillance with an alarm function;
  • Preset, auto cruise and specified pattern scan function;
  • 360 degree continuous pan;
  • 0 to 9 degree tilt from horizontal plane as well as auto flip 180 degrees;
  • Iris, focus, and white balance;
  • Backlight compensation;
  • Wide Dynamic Range (WDR); and,
  • Outdoor version is IP66 rated for use out doors;

The second camera is very similar to the latter, with some slight advantageous changes.  Product# SVP-ATDN36X has an optical zoom of 36X and an additional digital zoom of 10X.  This means the total zoom effect attainable for this model would be 360X.  This camera is vary similar to the previously mentioned model so the features list will only include those features or items that are different:

  • 540 TVL high resolution output;
  • Minimum illumination is 0.1 Lux for day mode and 0.01 Lux for night; and,
  • Heater and blower included in outdoor model.

It’s only fair to note that PTZ cameras that can be controlled remotely, when coupled with special software on the DVR, can also track or follow objects.  However, in this case instead of the technology lying with the camera, it is actually the DVR that contains the software and does the work.  It uses software to analyze the video sent to it, and then initiates the commands to the camera to PTZ so as to stay with the object tracking it.

So as you can see today’s digital video camera systems can handle some pretty complex tasks without the need for any human interruption.  What’s more is that on PTZ camera mounted in the proper place may often be able to take the place of 3 or even 4 stationary cameras.  Even though the PTZ camera may be in the moderate price range this fact alone helps to reduce costs, if not directly than at least indirectly.

Another added value feature of Security Camera King’s DVRs is that all but the Elite Mini Economy can control PTZ cameras with just a mouse.  Point to where you want to go, and the PTZ camera aims there.  However, if you prefer more conventional means of control, Security Camera King does sell a separate PTZ control that has a joystick and a keyboard designed specifically for use with PTZ cameras.

If you have any additional questions about auto-tracking dome cameras please feel free to contact one of our security experts vie on-line live chat or by telephone at 866-573-8878 Monday through Friday from 9AM to 6 PM EST.


OD-LX520IR50 Vandal Resistant Dome Camera

Friday, March 25th, 2011

Security Camera King’s (SCK’s) OD-LX520IR50 Vandal Resistant Dome Camera is the featured camera for all of SCKs Ultimate series DVR complete package systems.  Although this camera sells individually for only $74.95, it’s a very high quality high definition camera that produces detailed video and comes packed with many useful features.

The OD-LX520IR50 Vandal Resistant Dome Camera may be used indoors or outdoors and is rated at IP66.  The IP rating is the International Electrotechnical Commissions (EIC) standard for Ingress Protection; in other words it is a rating that grades the amount of protection that is afforded to the camera from weather and other elements.

A rating of IP66 means that the camera is dust tight and is completely protected against contact with dust.  In addition, the camera can withstand powerful water jets projected from a 12.5 mm nozzle against the enclosure without any harmful effects to the camera.

The OD-LX520IR50 is a vandal proof camera which means it has been designed in such a manner as to prevent as much mischievous damage to it as possible.  There are no exposed screws, the case is rugged and durable, and even the video transmission and power supply cabled can be run from behind the camera to prevent exterior exposure.

The camera is also a night vision InfraRed camera.  This camera can create crisp, clear detailed video images in total darkness and has a total darkness IR range of approximately 50 feet.  This is supported by the 23 separate IR Light Emitting Diodes (LEDs) that surround the camera lens and flood the camera’s field of vision with IR illumination.  Although this IR illumination produces a bright, nice contrast video image, it cannot be seen by the human eye.

The OD-LX520IR50 also has back light compensation to automatically adjust for subjects that could otherwise be distorted to back lighting.  It also comes with auto white balance for proper contrast and brightness control.  The included lens is a small 3.6 mm/F2.0 lens.

For the technically inclined, we’ll provide the following additional information.

The OD-LX520IR50 utilizes a SONY 1/3″ CCD with a horizontal resolution of 520 TVL (television lines).  It’s signal to noise ratio is more than 48 decibels and its clock frequency is NTSC 28.636 MHz and a 2 to 1 interlaced scanning system.

The minimum operating illumination is 0 Lux because the camera is an IR camera that can operate in total darkness.  The 23 IR LEDs that surround the lens can provide a working range up to 50 feet, but greater lengths can be obtained using additional IR illuminators.  The IR mode begins working when the ambient light dims to less than 10 Lux which is detected and then IR is initiated by a CdS (Cadmium Sulfide) cell (i.e. photocell).

The camera has an internal, negative synchronous system with a Gamma rating of 0.45 and an auto electronic shutter speed range of from 1/60 to 1/100,000 of a second.  It has a video output of 1 volt peak-to-peak at 75 ohms with auto gain control.  The camera operates on 12 Volts DC with a draw of 300 mA (this includes the IR LEDs).

The camera is small, compact and light weight.  The camera dimensions are 3.7 x 2.7 inches at weighs just under one pound (15.9 ounces)

The OD-LX520IR50 is durable an can operate within a fairly large temperature range.  The camera has been field tested for storage only at temperatures ranging from -22 degrees F through +140 degrees F and has a significant operating range of from 14 degrees F through 113 degrees F.

For more information and customer reviews check out the OD-LX520IR50 Webpage at or contact on of our security experts via on-line “Live Chat” or by telephone at 866-573-8878 Monday through Friday from 9AM to 6 PM EST.