What is high resolution security camera

What is high resolution security camera

Postby CCTV Professional » Mon Jul 20, 2009 4:30 pm

Typically High Res Color is

450-480TVL

[Effective Pixels - Picture Elements]
811 H x 508 V (NTSC)
795 H x 596 V (PAL)

Typically High Res B/W is

570-600TVL

[Effective Pixels - Picture Elements]
811 H x 508 V (EIA)(NTSC)
795 H x 596 V (CCIR)(PAL)

Typically True Day Night is

450-480TVL Color / 570-600TVL B/W

[Effective Pixels - Picture Elements]
811 H x 508 V (NTSC)
795 H x 596 V (PAL)


Typicall Low-mid Res Color

380TVL Color

[Effective Pixels - Picture Elements]
542 H x 492 V (NTSC)
542 H x 582 V (PAL)


lately more and more companies have been producing 520-540TVL color cameras. Typically these are digitally enhanced to that resolution so it will differ from one to the next as far as quality goes. Sanyo has had the 520TVL cameras now for several years, so essentially it is nothing new. Its just cheaper to do the processing now then it was back then.

Personally I dont find much of a difference in the quality from the 480 to 540 cameras, but remember quality of the camera's image will also depend on the lighting/glare capabilities, Backlighting (somewhat related) capabilities, Lens/Focus, and overall effective pixels (actual clarity of image). With the Sanyo's I always disable the 520TVL feature anyway.

Most of the 540TVL cameras come out of S korea Now from a couple main manufacturers.

Look for the Effective/Pixels in the camera's specs though, as thats what really matters. If its a cheap OEM camera its highly unlikely that you will find those specs and more chance that they will not have the effective pixels of a more expensive camera. It will differ.
CCTV Professional
 
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