Re: Video quality for security - camera lines

["Simon Coates" <simon@xxxxxxxxxxxxxxxxx>]

Ian,

Have a look at www.rfconcepts.co.uk

Fairly good range of DVRs and a very good range of cameras.

One thing to remember is to choose the right lens for the area you need to
look at.  Check the angle of coverage of the camera and make sure it is
suitable of the view you want to capture.  If part of the shot will capture
the sky then go for a camera with good backlight compensation.
Don't get a camera with less than 480 TV lines - this is the minimum you
should go for.  RF do some 550 TV lines cameras - make sure the DVR can
record at this resolution though.

I've just recently installed a day/night board camera (from Henrys) and the
night-time view is quite good.

I can send you some images from my system if you want.

Regards


Simon




----- Original Message -----
From: ian.bird@xxxxxxx
To: ukha_d@xxxxxxx
Sent: 15 March 2007 10:50
Subject: [ukha_d] Video quality for security - camera lines


Hi all

Thanks for the advice re: surveillance. I particularly liked Phil's idea
of land mines but this may not do the driveway any favours.

Anyway, having looked round I am now thinking of what cameras to get
assuming I get a DVR based system. I have found systems which include
cameras but the choices for outdoor cameras seem limited to 380 or 420 TV
lines. I have not been able to find examples of the output from these
anywhere. Does anyone have recommendations as to what spec camera to get.
I need external with night time IR and ideally available in different lens
specs giving different angles of view. Not a zoom camera as these are
silly prices.

I have not been able to find out if the extra resolution from say a 480 TV
lines camera over a 380 or 420 will look any different once recorded onto
the DVR. I am looking for facial recognition if the worst came to the
worst so detail may matter but only if it is recorded accurately.

The most widely available DVR seems to be the Avermedia AV760 as sold by
Henrys.co.uk and many others. This is networkable as I need this feature.
It is an expensive investment so I want to make sure as best I can that it
will make me happy and not frustrated.

Thoughts and advice welcome please.

Ian

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