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Adapt a digital camera to a CCTV system.



 
 
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  #1  
Old September 13th 14, 02:54 AM posted to rec.photo.digital
Peter Jason
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Posts: 288
Default Adapt a digital camera to a CCTV system.

Can this be done? There are many useful second-hand digital cameras
available these days and I need to know what sort of camera output is
required to convert to a coaxial video cable of a CCTV setup. Is
HDMI suitable.
Peter
  #6  
Old September 15th 14, 05:57 PM posted to rec.photo.digital
Martin Brown
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Posts: 821
Default Adapt a digital camera to a CCTV system.

On 15/09/2014 04:27, Peter Jason wrote:
On Fri, 12 Sep 2014 23:11:14 -0400, "J. Clarke"
wrote:

In article ,
says...

Can this be done? There are many useful second-hand digital cameras
available these days and I need to know what sort of camera output is
required to convert to a coaxial video cable of a CCTV setup. Is
HDMI suitable.
Peter


If the camera only has HDMI outputs and the CCTV has only NTSC inputs
then you need to buy a converter box that is likely going to cost more
than a CCTV camera.


That's a pity because good superseded cameras are very cheap. There
must be SOME way to do it?

You can do it but the quality suffers a bit. eg.

http://www.ebay.co.uk/sch/sis.html?_...C+Standard+TVs

Choose wisely and you can get a digital camera that outputs TV video.
But beware they tend to cook themselves if used in their video mode for
very long and some will even go into thermal shutdown.

Basically it is a bad idea unless you have specific requirements like
single frame video capture for animation or similar. Webcams are cheap
and these days some are really very capable - better than many CCTVs.

--
Regards,
Martin Brown
  #8  
Old September 19th 14, 03:33 AM posted to rec.photo.digital
Michael Black[_2_]
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Posts: 41
Default Adapt a digital camera to a CCTV system.

On Mon, 15 Sep 2014, Martin Brown wrote:

On 15/09/2014 04:27, Peter Jason wrote:
On Fri, 12 Sep 2014 23:11:14 -0400, "J. Clarke"
wrote:

In article ,
says...

Can this be done? There are many useful second-hand digital cameras
available these days and I need to know what sort of camera output is
required to convert to a coaxial video cable of a CCTV setup. Is
HDMI suitable.
Peter

If the camera only has HDMI outputs and the CCTV has only NTSC inputs
then you need to buy a converter box that is likely going to cost more
than a CCTV camera.


That's a pity because good superseded cameras are very cheap. There
must be SOME way to do it?

You can do it but the quality suffers a bit. eg.

http://www.ebay.co.uk/sch/sis.html?_...C+Standard+TVs

Choose wisely and you can get a digital camera that outputs TV video. But
beware they tend to cook themselves if used in their video mode for very long
and some will even go into thermal shutdown.

But, if I connect a tv set to my Canon point and shoot, the tv screen
becomes the viewing screen. The picture is "live", I'm not taking
pictures or using it like a movie camera. The tv screen shows what the
LCD screen on the camera would show, and that's a live feed of what the
camera is seeing.

That sounds exactly what the poster wants. Let something else down the
line record it, if recording is needed.

Of course, some buffer may be needed since that composite output isn't
likely to be able to drive long cable lengths.

Basically it is a bad idea unless you have specific requirements like single
frame video capture for animation or similar. Webcams are cheap and these
days some are really very capable - better than many CCTVs.

Except once you start using webcams (which can be had quite cheaply at
this point so long as you can live with low resolution), you have to feed
them into a computer to actually get a picture. Or get a converter to
output an analog tv signal.

Michael

 




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