By: Arthur Cooper
Submitted: 2011-04-21 11:12:23 | Word Count: 664
One of the highest resolution cameras in the digital video security industry is the 650 TVL color dome camera. Security Camera King has several different models of 650 TVL (TeleVision Lines) cameras and in this article we will take a close look at each camera. This should give you enough working knowledge to make your own comparisons and determine which one is right for you.
A quick word about resolution. As technology increases in complexity, it seems that the resolution of the cameras, the DVR’s, and the display monitors is always increasing. A camera that offers 650 TVL means that its sensor, either a Charged Coupled Device or CCD or a Complementary Metal Oxide Semiconductor or CMOS, can reproduce the image “seen” in up to 650TeleVision Lines.
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TVL is basically a carryover term that was used in the days of analog video. Today, there are very few new analog cameras available; digital is the “wave” of the future and is currently the standard for digital video security system cameras. However, camera manufacturers still reference their cameras in terms of TVL even though digital video can be more accurately described in terms of pixels.
A 650 TVL color dome camera means that the camera can produce a video image with up to 650 horizontal lines. We will purposely avoid the issue of resolution conversion between TVL, CIF, D1, etc, because of our limited space for this article. However, what is important to remember is that 650 TVL is a very high resolution, and only until recently it was the highest attainable. There are now cameras that are capable of 700 TVL in color or black and white. This should still give you a good idea how detailed a 650 TVL color dome camera is especially when compared to a “standard” resolution camera of 420TVL.
For the remainder of this article, we will focus on the 650 TVL color dome cameras that are available for purchase from Security Camera King.
Product# TPD-65MINI
This camera features 650 TVL from a 1/3″ Sony Super HAD II CCD. Other features include:
* Smaller overall size (93 X 64 mm or 3.66 X 2.5 inches);
* Built in fixed f=3.6mm lens;
* Minimum operating illumination 0.000001 Lux;
* Back light compensation (BLC);
* Operates on 12 VDC power;
* Automatic white balance and gain control; and,
* RCA audio and video connectors.
Product# ID-EL650L2812
This is another 650TVL color dome camera that includes the new Sony Digital Signal Processor (DSP) chip called the Effio which offers supreme signal correction. Other features include:
* Minimum illumination .001 Lux;
* Operates on 12 VDC but consumes only 3 watts of power;
* When operating in black and white mode this camera can produce video images at 700TVL;
* 2 year warranty;
* A joystick is built in the camera’s cable to control the intuitive, easy to use On Screen Display; and,
* Includes ATR (Adaptive Tone Reproduction), BLC, and DNR (Digital Noise Reduction).
Product# VD-EL650L2812
This is a 650TVL color dome camera that also uses the Sony 1/3″ Sony EXview HAD II CCD and the Effio DSP and is vandal resistant. Other features include:
* Minimum illumination .001 Lux;
* Operates on 12 VDC but consumes only 3 watts of power;
* When operating in black and white mode this camera can produce video images at 700TVL;
* 2 year warranty;
* A joystick is built in the camera’s cable to control the intuitive, easy to use On Screen Display; and,
* Includes ATR (Adaptive Tone Reproduction), BLC, and DNR (Digital Noise Reduction).
Product# TPS-QLDAZ4
This is a high resolution, 650TVL color dome camera that is highly specialized in that it can produce full color video images at night without any additional illumination (such as infrared Light Emitting Diodes). Other Features include:
* A motorized 2.9 â€" 10 mm DC iris with an auto focus lens;
* Dual power capability â€" it can operate on 12VDC or 24VAC;
* Minimum illumination 0 Lux;
* Vandal resistant;
* Controllable zoom lens with digital zoom of up to 10X;
* Weather proof; and,
* White balance, Back light, Gain, Mirror, and motion controls.
As you can see, Security Camera King offers a well rounded selection of 650 TVL color dome cameras. If you are interested in purchasing one of these cameras or would like more information about them, please contact one of our security experts today.
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