So you've chosen either an Analogue (also HD-SDI) or IP solution based on your budget and other requirements. What does 500 TVL, 3MP, Varifocal, Wide Dynamic Range and PTZ mean in choosing camera. Stick around and we'll shed some light on these terms.
Analog Cameras
If you bought a packaged DIY system with cameras included you are limited to what cameras are included in the system unless you expense yourself further and buy cameras that actually suit your needs.
How is a camera's image quality measured? TVL and MP Explained!!
Analog Cameras
Analogue cameras use TV Lines (TVL). The higher the TVL the better the picture quality so pay attention to this when purchasing DIY kits. Also I personally recommend to go with 600 TVL or higher cameras.
The following video summarizes TVL as well as other aspects such as night vision and weather proof requirements in selecting analogue cameras.
IP Cameras
IP cameras quality is measured by megapixels (MP). The higher the MP count the higher the quality.
See the video below for a comparison between a 1.3MP, 3MP and 5MP
Lenses
Choosing the camera with the right lens is of particular importance with Analogue cameras. Generally IP cameras can cover a larger area in fine detail. For instance a small parking lot with 10 cars can be covered with 1 IP camera. Due to the high quality of the recording you are able to digitally zoom into any one of the cars and see the registration number on a license plate clearly.See the video below for an example
Cameras will come with a lens description such as 2.8mm ,5mm or 3mm-5mm varifocal. The smaller the millimeter (mm) measurement, the wider the lower the zoom.This is explained in the video below.
Varifocal lenses mean that the zoom of the camera can be adjusted manually to suit the application as seen below.
The following link explains what is Wide Dynamic Range and when it should be used.
See the video below for a comparison between a 1.3MP, 3MP and 5MP
Lenses
Choosing the camera with the right lens is of particular importance with Analogue cameras. Generally IP cameras can cover a larger area in fine detail. For instance a small parking lot with 10 cars can be covered with 1 IP camera. Due to the high quality of the recording you are able to digitally zoom into any one of the cars and see the registration number on a license plate clearly.See the video below for an example
Cameras will come with a lens description such as 2.8mm ,5mm or 3mm-5mm varifocal. The smaller the millimeter (mm) measurement, the wider the lower the zoom.This is explained in the video below.
Varifocal lenses mean that the zoom of the camera can be adjusted manually to suit the application as seen below.
The following link explains what is Wide Dynamic Range and when it should be used.
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