Pick up lens is a the most critical equipment of video surveillance system, its quality ,pros and cons is a direct impact on the camera machine. Therefore, the correct choice of camera lens can get a good shooting results.

The pick up lens is equivalent to the human eye lens, if there is no lens, people saw not see any object; If there is no lens, then the output of the camera image is of a vast expanse of whiteness, no clear image output. When the muscles of the human eye lens can not be stretched to its normal position, which is commonly known as myopia, the immediate landscape becomes blurred. Pick up head and lens with a similar phenomenon, when the image becomes unclear , you can adjust the focus after the camera and change the CCD chip and the lens distance from the base level, vague image can be became clear.

But how can we choose the best pick up lens? Here is talk about how to properly use a different pick up lens in different using environment. In terms of the pick up lens aperture can be divided into manual iris lens and automatic iris lens. Manual, auto iris lens choice depends on whether the constant use of the environment illumination.

For constant illumination in the environment situations, such as elevators sedan inside, closed the corridor, no direct sunlight in the room, can use manual iris lens, so that the system can be installed in early commissioning, in accordance with the actual illumination environment, one-time tuning of the lens aperture size, brightness of the screen can be satisfactory.

The environment is constantly changing illumination conditions, such as illumination changes in time with the sunshine a large hall, windows, and lift lobbies, etc., are required to use auto-iris lens (must be accompanied with an auto iris lens camera socket), so that we can achieve the automatic adjustment of screen brightness to get the best of the more constant brightness of the monitor screen.

For the auto-iris lens control signal can be divided into two kinds of DC and the VIDEO control, that is DC voltage control and video signal control. This is the type of auto iris lens selection, the camera auto-iris lens socket connection, as well as select auto iris lens drive mode switch, the three note that good coordination can be.

When you need to buy a pick up lens,  the choice of pick up lens supplier is also very important.

Does the pick up lens manufacturer have a very good reputation. Can it provides high quanlity pick up lens but cheaper than other pick up lens supplier.

SMC Multi-Media is a full service designer and manufacturer of world class electronics and optical products. As a leader China OEM pick up lens, SMC Multi-Media provides end to end  Electronic equipment OEM, Equipment OEM Contract Manufacturing Services, Laser Printer Parts, Pick Up lens ,LED Lighting and so on!