1) Television Lines (TVL)Television lines relate to the amount of horizontal lines saved through a security camera. The number of television lines depends on your camera’s picture resolution/sharpness. The lower the number of television lines, the more pathetic the picture resolution turns out to be and consequently, the actual quality of picture. Average and high picture resolutions are attained with more than 370 and 450 TVL respectively.
2) Quality and Kind of Imaging ChipPrimarily, CCTV cameras use CMOS and Charge Couple Device (CCD) imaging chips to construct images. Small-sized CCTV security cameras, that are really often far more affordable to buy, use CMOS imaging chips. These types of cameras don’t typically have adequate light sensitiveness and as a result, they produce low quality security videos, which skimp on your security.
However, security cameras that use CCD imaging chips have high light sensitivity, and this is crucial in producing exceptionally high quality videos. In addition, the size of an imaging chip influences the class of image a camera produces. CCD chips are fairly large (1/2, 1/3 and 1/4), which means that cameras using CCD chips produce higher quality images than those using CMOS.
3) Brand of CCD ChipAll CCD imaging chips may not be created equal and even when the specs are the same, they just don't function in the same way. The quality of a CCD imaging chip is dissimilar by brand. Several of the high quality brands of CCD imaging chips are Sony and Panasonic.
Quality and Type of LensesThe lens of a security camera is crucial in recording all the relevant information. You will need to secure a security camera with quality lens to help focus adequate pixels onto the target to be able to procure all information on the object no matter how far off it is. Bad quality lenses are not equipped to capture all the information of an object which can include the colour of a car and the number plates.
Various kinds of lenses produce diverse results. Zoom lenses are the most versatile and a convenient type of lenses to have in a CCTV security camera because you can zoom in or out based for your needs and expectations.