Stanleyryan
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Posts posted by Stanleyryan
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Smart phone resolution is for TAKE PHOTOS, security camera resolution is for TAKE VIDEOS
Taking video have to takes 25 to 30 images in one seconds, but Taking photo only one
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Attached are 2 photo snapshots from my DVR. One pic is when I set the DVR settings to D1 and then the other is when I set the DVR to 960h.Under 16:9 ratio, you set D1 resolution, under 4:3 ratio, you set 960H resolution " title="Applause" />
I don't understand what you mean by this.
D1 resolution is 704 x 480, 4:3 ratio. if you display it in 16:9, the image of course will be stretched, 960H resolution is a kind of D1 resolution under 16:9 ratio, it's resolution is 960 x 480. But it have to display 16:9 ratio through 960H DVR.
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Yes it is the difference between US and China version, China version without cable inside bracket, but US version have.
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You need a NVR not DVR
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ask the supplier send you a user manual
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16:9 through 960H DVR, 4:3 through D1 DVR
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Attached are 2 photo snapshots from my DVR. One pic is when I set the DVR settings to D1 and then the other is when I set the DVR to 960h.Under 16:9 ratio, you set D1 resolution, under 4:3 ratio, you set 960H resolution " title="Applause" />
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any photo showing? Try to turn your camera target to another place where around 10 meters far, checking if it is able focus correctly.
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In analog, wide view and see number plate at 30 meter do not exist at the same time, except use PTZ camera, but it will over your budget.
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IP camera or analog camera? Please check the TV format of your camera first, PAL or NTSC
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How far from your 5 locations to your NVR? It's hard to storage 1080P resolution videos from remote, since each location requires around 4Mbps upload speed Internet for 1080P resolution.
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I recommend you to use Hikvision or Dahua POE cameras, most of them under your budgets, you can select some bullet and turret type for installing.
But besides cameras, you require a NVR or PC for storage, I recommend you to buy a NVR too for 7/24 recording.
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Hi Fonix,
Black clothes are showing purple color normally happened in CMOS sensor cameras. A CMOS sensor require a IR cut filter to correct the color. Cheap cameras always without or with low quality IR cut.
And some cheap sensor, like cmos camera 420tvl use pixelpus pc1030 image sensor will meet the color probs even with a IR cut. I recommend you to use high resolution cmos cameras like 800tvl, 900tvl or 1000tvl, price is similar, also cheap enough, but image quality is wonderful.
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Hello Fonix,
Yes some of cheap cameras also with reputation and good quality, even with the same specs and chipset compare to brand cameras like Dahua.
Brand cameras are expensive at the same specs as following reasons:
1. Brand cameras is able to provide local after sale service, so they are trustful.
2. Brand cameras often with their own patent design, cheap cameras often use common case where it can sourcing from market anywhere.
3. Brand cameras are well known, if you meet some probs, it's more convenience to ask for help. Maybe some people meet the same probs.
4. Brand cameras firmware upgrades is trustful, often can be download on their website.
As said before, I recommend you to select HD systems (Analog HD or IP HD), here is the differences of these two HD solution:
Analog HD: (AHD, HDCVI, HDTVI, HD-SDI), all of Analog HD are real time with no time lag.
AHD: max. 1.3 MP resolution at present, use Nextchip solutions, many manufacturers do it, quite cheap, signal transmit 500Meters over coaxial cable.
HDCVI: Designed by Dahua, max. 2.0MP resolution, mature technology, is able to transmit video, audio and RS485 signals in one coaxial cable, 500 Meters. cheap price.
HDTVI: Designed by Hikvision, max 2.0MP resolution, but can't transmit audio, RS485 signals in one coaxial cable, 300 Meters, cheap price.
HD-SDI: max. 2.0 MP resolution, the image quality is more sharp than AHD, HDCVI and HDTVI, but the signals limited to 100 Meters to 200 Meters by better coaxial cable. Price double than above.
Pros: easy for installation, no time lag, cheap price.
Cons: Resolution limited to 2.0 MP
IP HD solution:
Most of the IP cameras are real time preview from your pc or cellphone, but a little time lag.
IP cameras is able to provide higher resolution like 2.0 MP, 3.0MP even more, and together with good software for multifunction settings, including video analytics, it's more intelligent.
Pros: Higher resolution, full functional software.
Cons: a little time lag, require some network knowledge for managing the system. Price are expensive than Analog HD system.
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Thank you for your reply but these cameras are listed as weather proof.Replace the outdoor cameras for indoor to check the night vision images. If it becomes great, it is the problem of weather proof.
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What you asked is analog camera. A CCTV Camera chipset have two core parts: Sensor + DSP
Different Sensor and different DSP make the price vary.
Sensor is to capture images, DSP is to process and convert the image into signal, like a CPU in a PC.
Just like 420tvl, cheap camera with bad image quality, but high end with good image quality.
1/3" or 1/4" is the size of sensor, the larger size the better images it captures.
How much of a difference would there be between a high end (lets say) 420TVL vs a cheap 420TVL camera.High end ccd 420 TVL normally use Sony 3142 + 633 chipset (1/3"), and cheap use fake or Sony 3142 + 405 (1/4"), price only us$1-2 different with the same camera housing. 420 TVL CMOS please forget it, it almost the same price.
And just incase a high end brand dont manufacture 420TVL cams. Simply change the comparison example to 540TVL cams. you can easily find $30 cams and $250 cams with he same 1/3 ccd/cmos and TVL specs and huge price differences.540 TVL is a big difference solution, there are too many chipset to select from Sony, Panasonic, Sharp, Nextchip, Sony is expensive and Nextchip is cheap, it could combine with different Sensor and different DSP, like Sony Sensor + Nextchip DSP. Of course the image quality different too especially in night vision.
What is DSP and how much of an affect does it have. Are the lenses that big of a cost difference? and if so, is it that obvious when comparing D1 video recordings?As said above, DSP is the core part in a camera, it just like the CPU in a computer, different DSP cost big differences, lenses also is a big fator in camera, better lenses more clear images, but cost not too much. It is big difference in D1 resolution recordings.
Some things from a quick search bring up terms that vary greatly in pricing:Ex-view, DIS, hdis, super had, interline, effio, pixplus....
Ex-view, Super HAD, Effio is a kind of CCD sensor from Sony
DIS, HDIS is a kind of CMOS sensor
Pixplus is a CMOS sensor manufacturer
Interline is a kind of CCD sensor technology
Normally CCD sensor is more expensive than CMOS sensor, with little noise and better night vision, and especially stable enough. But CMOS sensor is able to get higher resolution with very good price.
Finally I suggest you forgeting the Analog Cameras, High Definition (HD) is the trend: Analog HD (AHD, HDCVI, HDTVI) cameras, Mega Pixel IP Cameras.
Analog HD cameras price is better, even better than analog cameras, IP Camera price is expensive but higher image quality.
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This is a IR dome camera for indoor. It seems camera 1 installed indoor, and camera 2-4 installed outdoor. As it without good weather proof, outdoor when the weather is cold enough and enter into some water inside, the fog will appear inside by the IR light heating.
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Hi Brendin,
Some IP PTZs have a heater inside which is able to clear the snow on the camera, and some with wiper in front of the lens. You can select that models.
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Try to set the motion detect interesting area by directly enter into Hikvision cameras setting through IE and then connect to Dahua NVR and enable motion detection function.
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Do it by yourself, you will save much money, everything you can get from costco or amazon with very good price.
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Use Wi-Fi IP camera, via Access Piont (AP) for transit Wi-Fi signals, camera and AP powered by solar is ok
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HDCVI DVR is able to work together with HDCVI Camera and Traditional Analog Cameras. As for your requirement, you can replace to HDCVI.
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Bad luck, Cantonk is not a big company, you should investigate the company before order. Cantonk only simplely assemble all components, could not fix probs if occured.
I suggest you to replace the board from the supplier,otherwise you will loss more. Next time before ordering, you'd better to visit their factory first for long cooperation, otherwise purchase from local importer is better.
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Besides 4 PoE ports, is there any other ethernet port in NVR?
4 IPCs --> PoE Switch -->NVR is available, the camera powered by PoE switch and data transfer to NVR by one cable from PoE Switch.
Dahua use night mode in color?
in Security Cameras
Posted
The IR cut have two types, one have only one filter, one other have two filters.
Check your camera if it have two filters, if have two filters, do not support mixture light(IR and white light).
Two filters function:
During day time, one filter filtered the IR lights to assure good image quality and reproduction.
During night time, one another filter filtered the white light to assure good b/w image.
One filter camera only have day time filter.