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W2J wrote:there is a legal memo out, vat should be dropped this week and duties the following week coming.
sonygoup wrote:pugboy wrote:any dvr experts here ?
I have some questions concerning the software in them
Well ask i know i good bit about them
pugboy wrote:sure,
it appears almost all of these DVR's on the market use the same or similar software inside of them and most people simply put them to record continuously.
I have tried changing a camera to record on motion detect only.
It is rather poor and does not trigger many times, set high sensitivity and all pixels etc.
Spoke to a few installers and they said same thing, all they do is install with full recording and you have to sit and do a fast forward and watch the whole thing.
This doesn't really make much sense if you want to check back if and when somebody jumped over a wall and jumped back.
I used to have a Linux based one called Zoneminder which has very good software,
you can pull up a list of all motion triggers and check them easily.
Recording 24hrs is a waste of space, better to simply record when there is motion in the camera's view.
Have you been able to get motion detect recording to work well or only use full 24hr record ?sonygoup wrote:pugboy wrote:any dvr experts here ?
I have some questions concerning the software in them
Well ask i know i good bit about them
W2J wrote:there is a legal memo out, vat should be dropped this week and duties the following week coming.
Strugglerzinc wrote:DVR motion detection is not based in the camera so how/why would the brand of camera affect it?
pugboy wrote:I bought the 8ch version of that, later bought two 8ch swann's
They are all of same quality
sonygoup wrote:pugboy wrote:I bought the 8ch version of that, later bought two 8ch swann's
They are all of same quality
Ok kwl because i never used the brand but the specs are good and was recommending it to a tuner jus wanted to make sure its good
Because it 600tvl with 1/3 cmos and i know that good quality
W2J wrote:sonygoup wrote:pugboy wrote:I bought the 8ch version of that, later bought two 8ch swann's
They are all of same quality
Ok kwl because i never used the brand but the specs are good and was recommending it to a tuner jus wanted to make sure its good
Because it 600tvl with 1/3 cmos and i know that good quality
That's not good quality
sonygoup wrote:W2J wrote:sonygoup wrote:pugboy wrote:I bought the 8ch version of that, later bought two 8ch swann's
They are all of same quality
Ok kwl because i never used the brand but the specs are good and was recommending it to a tuner jus wanted to make sure its good
Because it 600tvl with 1/3 cmos and i know that good quality
That's not good quality
U checked out the system?
I have same camera like that i think n the does look good
Strugglerzinc wrote:sonygoup wrote:W2J wrote:sonygoup wrote:pugboy wrote:I bought the 8ch version of that, later bought two 8ch swann's
They are all of same quality
Ok kwl because i never used the brand but the specs are good and was recommending it to a tuner jus wanted to make sure its good
Because it 600tvl with 1/3 cmos and i know that good quality
That's not good quality
U checked out the system?
I have same camera like that i think n the does look good
He's probably getting at CMOS vs CCD. Long and drawn out comparison.
TVL or television lines –
This is the number of horizontal lines a camera can record and if you`ve done a bit of research already, you would be forgiven for thinking it's the holy grail of camera quality. It isn't.
Of far more importance is ensuring the correct lens for your particular application. No amount of TVL will allow a particular lens to capture detail beyond its natural ability.
At D1 resolution you have a given number of pixels (around 400,000) and you need the lens to concentrate sufficient pixels onto the subject to allow you to capture detail.
If a 380TVL camera allows you to read a number plate at 15 metres for instance (probably around a 22mm lens) then a 700 TVL camera with the same lens wouldn't be able to read it at 20 metres. It might manage an extra half metre or so but that's it.
The final thing to keep in mind is that many figures quoted are untrue or misleading. A number of the UK national retailers are currently claiming a TVL resolution for their cameras which is in fact only achievable in black and white at night. The daytime colour resolution is less than the figure emblazened across their websites and publicity material!
CCD and CMOS sensors - the camera's retina
There are 2 types of camera sensor. CMOS (short for complementary metal oxide semiconductor), sensors require a lot more off chip circuitry to clean up the image if you want a high quality result. Costing less to produce CMOS sensors offer a cheap solution at the expense of quality for lower resolution applications. CCD sensors (short for charge coupled device), are more expensive to produce but the image quality is generally higher needing less electronic "touching up". Most professional cameras tend to use CCD technology.
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