Mini Camera Guru: High Def Doesn't Mean High Returns

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Novel security camera systems now use digital technologies and what makes these devices digital are the image sensors behind the camera lenses the component in your mini camera that transform the light and image captured by your camera's lens and converts them into digital signals. These signals are either stored in your camera's internal memory or sent immediately as a digitized video file to a P. C. Or DVR.

The prices of digital mini cameras have gone down mainly because of the means these image sensors are far easier to make now than they did one or two years gone. These sensors convert light into electrons and there are two major chip technologies used to turn out these sensors : CCD or Charge-Coupled Device and CMOS or Complimentary Metal-Oxide Semiconductor image sensors. CMOS chips are more easy to manufacture and are therefore cheaper than their CCD opposite numbers.

These technologies have developed quite at length at present times that electronic cameras can now capture and produce Hi-D video pictures of the highest qualities and image resolutions. As a reseller or online retailer of mini camera devices, you ought to have a clear appreciation of these technologies to keep a balance between getting hi-def products and supplying what your clients really desire. Hi-D cameras which sell at higher costs may not necessarily mean more serious returns for your investments as many superstores would at last find out .

Understanding Digital Mini Camera Technologies

The following described in brief the commonest and most well liked digicam technologies in existence at present that all online safety system retailers should know.

* CCD Sensor Chips

Most electronic cameras today use CCD sensor technologies. CCDs were a result of the quest for low cost and easier-to-produce camera solutions that would ultimately replace both the need for mechanical shutters and the use of film for cameras. In simple terms CCDs are the electronic versions of the eye.

There are essentially 4 sorts of CCD sensors : Linear, Interline, Full-Frame and Frame-Transfer CCD cameras. Linear CCDs use only a individual row of pixels and makes use of motors to physically move the pixel sensors. They are no longer very commonplace except in flatbed scanners. Interline CCDs are more commonly used due to the elevated cost and shutter limitations of full frame transfer CCDs.

* CMOS Sensor Chips

CMOS emerged as an easier-to-manufacture alternative choice to CCDs as it employs the same manufacturing processes used to build semiconductor chips across the world therefore making them less expensive than CCDs. On top of that, CMOS sensors use a lesser amount of power than CCDs but include other processor functions such as analog-to-digital conversions, white balance adjustments, load signal processing and other camera controls.

* Interline CCD Sensor Chips

Interline CCD chips have a hybrid shape that incorporates an interlaced photosensitive and masked storage array, giving them better electronic shuttering functions which are the main inability of the frame-transfer CCDs. It has also got an electron drain that hampers electron overflow which is the main cause of overexposure for adjacent pixels, causing the blooming or smearing effect on images and video feeds.

* Super HAD CCD Sensor Chips

Effectively all Sony CCD cameras in the market now use their trademark Super HAD ( Hole-Accumulation Diode ) CCD sensor chip that provides better sensitiveness and smear rejection proportion than standard CCD types. It utilizes a new semiconductor technology developed by Sony Organization whereby two micro lenses are placed on top of each photodiode which can enable the sensor to collect more photons from inbound light.

Sensor Chip Technologies and Image Resolution

Selecting which mini camera sensor chip technologies would give out the best resolution would depend on the exact application and environment these cameras will be used. Although structurally speaking, CCD cameras have better light sensitivity and higher resolution making them excellent to be used with top quality pictures. For low-light applications Interline CCDs would work well especially if used together with IR light enhancements, while it can still perform well on other light levels.

CMOS cameras on the other hand have lower sensitivity and lower resolution making them excellent for lower costing starter level cameras, although more modern versions out in the market are promoted to have qualities that can approximate that of CCDs. However , CMOS cameras work well when the encompassing light is regular like in office hallways. The chip is sensitive to IR light and will not work well in bright daylight. It is also less delicate for indistinct light making them bad to be used out of doors at night.

The Sony Super HAD would provide the highest quality in terms of better sensitivity and smear rejection and is great for use in any locations and conditions, whether it is night or day, clear or foggy, and dark or light. However , these cameras would fetch a higher price limit than standard CCDs.

High Resolution or Lower Price?

CCDs would get higher costs than their CMOS equivalents making them better for higher end use, while CMOS are acceptable for entry-level and mid-level usage. CMOS chips however use less energy than CCDs so CMOS cameras will last for longer with batteries a big consideration for cell-phone as well as wireless mini camera security applications.

Sony Super HAD CCD cameras will cost higher compared to standard interline CCDs. For example, a mini camera that uses a Sony interline CCD chip will cost approximately $93, while a corresponding camera that utilises a Sony Super HAD CCD chip instead will get a price over $117. There are developments however in CMOS sensor technologies, which makes them approximately the same caliber of quality that CCDs have but at lower price levels.

But what would people prefer for their security systems? A highres camera that would get tons of greenbacks, or a mini camera with inferior resolutions but are available at extremely affordable costs? Again, the answer would depend on what the customer wishes or the environment where the cameras would be applied. Some will prefer high resolution and light delicate cameras when used in extraordinary locations like out of doors at night. On the other hand, other applications that do not truly need high-definition video output would do well with lower priced cameras.

As a retailer of safety devices, it's very important that you understand what your client wishes and match your products to minister to these wishes. It would not be profitable to stock on higher-priced hi-def mini cameras ( which should grant you higher profit markups ) -- if your clients prefer cheaper price selections.
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Kate Liu has 1 articles online


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Mini Camera Guru: High Def Doesn't Mean High Returns

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This article was published on 2010/12/29