Noob question

[KnowledgeSeeker 0]

Hi there, i just started to learn what is CCTV all about. so do anyone of you mind to tell me what does TVL mean? Is there any big difference between a dome camera with 380TVL and 480 TVL?

Spec below which 1 better resolution, save cost,clear view? eg: for Day use . Does TVL's value effect the output? Please assist me. Thank You.

1)

IR Space Dome Camera (380TVL)

1/3" SONY Super HAD CCD, 380TVL, 3.8mm Fixed Lens,

AWB, AGC, 100mm dome size, 2-Axis, 12VDC,

24 LEDs, 1 CdS Sensor, 0.00Lux(IR LED On)

IR LED's Visibility Range : 15 meter (850nm, 30˚)

 

and

 

2)

1/3" SONY Super HAD CCD, 480TVL, 3.8 mm Fixed lens,

AWB, AGC, 85mm dome size, 2-Axis

[Sawbones 0]

TVL is "TV Lines," and is loosely analogous to resolution.

 

So the more, the better.

[cctvexpert 0]

The more lines, the closer the lines together and the closer the lines together the higher the potential video quality.

[ispy4u2 0]

Since the topic has been addressed on TVL, what is your camera requirements?

 

Indoor or Outdoor?

[ak357 0]

The more lines, the closer the lines together and the closer the lines together the higher the potential video quality.

 

What determines how close are lines ?

 

Thanks

[cctvexpert 0]

what determines how close lines are together is the resolution that has been selected

 

CIF is 352 x 240

2CIF is 704 x 240

4CIF is 704 x 480