choosing cameras for cctv

[electrocuted]

good evening

how important are TVL ( tv lines) TO choosing a camera for a cctv system.

any advice on a system with good cameras for a cafe with remote viewing over the internet will be appreciated.

 

[electrocuted]

Seriously, no one has an opinion on the matter?.

 

[M107]

Well it depends on what picture quality you want, the higher the TVL the higher the camera resolution so producing a higher quality picture.

System Q Ltd - Supplier of CCTV Equipment to the Trade

 

[batty]

:C

 

[electrocuted]

thanks mate,really after a system that offers good quality pictures over the internet and recorded onsite.

Well it depends on what picture quality you want, the higher the TVL the higher the camera resolution so producing a higher quality picture.System Q Ltd - Supplier of CCTV Equipment to the Trade

 

[Badger]

in all honesty you need to be looking at a minimum of 500 tvl colour 600tvl b/w mode, because anything under that wont be able to produce satisfactory images, im sorry ive only just replied thats only cause ive only just seen this thread, :Blushing

the higher the tvl the better the quality the images will be reproduced, also a thing to remember is when selecting a lens dont go for cheapo lenses go for good quality well known brands as the cheap lens glass thats used is not polished and worked to as good a standard as the more expensive lenses so again the picture will suffer, one last thing always go for the best dvr that you can afford, again because using cheap dvrs will only devalue a recorded picture by 10 x less than a good dvr/ and hard drive unit, the thing with cctv is not to go in on the cheap side, as youll fall at the first hurddle. badger

 

[athej]

Check this site Iview cameras

 

[hxsarge]

making sure u get a decent adjustable varifocal lens is more important, aslong as you go 400tvl+. A decent mid range DVR is the Aver media seb range, some good deals to be had on aver media stuff about, there is even an iphone app to view remotely as-well as the browser. The features such as alarm triggers are rare on a dvr for this price, mine came with a free 500gb hd.

 

[Lead-Laddie]

Generally speaking anything over 540 TVL is considered high resolution,

anything over 600 TVL is considered ultra high resolution.

You should also consider the operational requirement of the camera,

what lighting conditions will be, the distance from the DVR,

do you require a static camera or a PTZ and is it to be indoor or outdoor,

do you require vandal resistant cameras and what will be your

target view close up or a wider angle view.

If you ignore these factors you may pay a bargain price for high resolution,

but it will give you poor performance if the camera is unsuitable for your purpose.

I suggest you contact your supplier and tell them your operational requirements and

let them make a suggestion. Then you will get a suitable camera and not have wasted your hard earned cash.

Look for a dealer that supplies Night Devil cameras.

If you will view over the internet, you will need to pay attention to the second stream output of the DVR and balance that with the primary video stream.

Good luck.