Re: Digital vs Analog Cameras?

["Roland Moore" <roland@xxxxxxxxxxxx>]

I think most a cameras these days have a "digital" CCD chip instead of a
tube for capturing images. Therefore nearly all are digital. Speaking only
of CCTV security cameras, my understanding is that the camera usually has a
BNC or analog output. There are some cameras on the bottom end of the scale
that have an RJ-45 (some even RJ-11) that work in a dedicated fashion within
a branded system (monitor, mux, DVR set
up)http://www.boschsecurity.us/pdf/EN/VS7390Switchr_DS_78611.pdf  . There
are ones that have a RJ-45 connector and include their own web server.
http://www.boschsecurity.us/pdf/EN/NWC_0495_EN.pdf  Some of those support
PoE. Those are more expensive by more than double than a camera with just
the BNC analog output.  If you have an analog BNC camera output you can
purchase an encoder to turn the analog video into a "stream" on a IP network
http://www.boschsecurity.us/pdf/EN/VIPX1Single-cha_DataSheet_enUS_E2142694155.pdf
I don't know what other the digital versus analog you might be speaking of.

"(PeteCresswell)" <x@xxxxxxxxx> wrote in message
news:vvvnj21nmv9581nafnmvlv4fv4qjjerugi@xxxxxxxxxx
> From the perspective of somebody who knows nothing (me...) it seems like
> the
> logical type of camera to get for PC-based security/surveillance is
> digital: no
> analog-to-digital conversion needed.
>
> Have I got it right?   Or are analog cameras enough cheaper for a given
> rez and
> conversion efficient/accurate enough that digital/analog is moot.
> --
> PeteCresswell