Surveillance camera, surveillance camera lens selection, monitoring of the characteristics of the camera manufacturers 
 Shenzhen City, South Electronics Co., Ltd. was founded in 2007, is an excellent manufacturer of the security monitoring industry, monitoring the rising star of the camera manufacturer. Our products are: surveillance cameras, HD cameras, infrared cameras, hemispheric surveillance cameras. Brand gold sharp visual (JRSE,), since the market in quality and service users unanimously approved, and has a good reputation in the security monitoring industry. Since its inception, the the Shenzhen Nanqiang electronics company R & D and brand operation, as the core, has now become an R & D, production, sales and service in one of the high-tech security enterprise. Strive to build homes shared in the past days, forged security, to lead the security industry for us to bring security and stability of life, gave a huge contribution. Our products are widely used in many areas of the safe city, financial banking, telecommunications, electric power, justice, transportation, government offices, residential, factories, schools, shops, mineral and energy 
 How to choose the camera lens? 
 The camera lens is the most critical equipment in the video surveillance system, its quality (indicators) will directly affect the camera the whole index, therefore, the choice of camera lens whether it is appropriate both to the quality of the system, but also related to the project cost. 
 Lens is equivalent to the human eye lens, if there is no lens, seeing less than any object; If there is no lens, the camera output image is the white one, there is no clear image output, with the principle of our home video cameras and camera is the same. The human eye muscles can not be stretching the lens to its normal position, the myopia is often said that the scene in front of blurred; camera and lens with a similar phenomenon, when the image becomes unclear You can adjust the camera's back focus, change the CCD chip and the distance of the lens base level (equivalent to the adjustment of the human eye lens position) can be blurred image becomes clear. Thus, the role of the lens in the closed circuit monitoring system is very important. Engineering design and construction personnel must often deal with the lens: the design according to the object distance, image size to calculate the lens focal length, construction workers often conduct on-site debugging, some of which is to adjust the lens to the best condition. 
 Color IR Waterproof Camera RS-629 characteristics: 
 Color Camera 
 1/3 "SONY CCD; 420TVL; 0.8Lux/F1.2 
 Built-in auto electronic shutter, auto gain, backlight compensation adjustable 

 Color IR Waterproof Camera Technical parameters: 
 Imaging Device: 1/3 "SONY Super HAD CCD 
 Sensing Area: 4.9mm (H) × 3.7mm (V) 
 Image pixels: PAL: 500 (H) × 582 (V) NTSC: 510 (H) × 492 (V) 
 TV system: PAL / NTSC 
 Horizontal Resolution: 420TV Lines 
 Minimum Illumination: 0.8Lux/F1.2 
 Color IR Waterproof Camera Signal to Noise Ratio: More than 48dB 
 Auto Electronic Shutter: PAL: 1/50s-1/100, 000s NTSC: 1/60s-1/100, 000s 
 Auto Iris Lens: VIDEO / DC 
 Gamma correction: 0.45 
 Gain control: H / L Switchable 
 White Balance: ON / OFF Switchable 
 Backlight Compensation: ON / OFF Switchable 
 Synchronization System: Internal Synchronization 
 The lens mount: C / CS 
 Video Output: 1.0Vp-p, 75Ω, BNC Connector 
 Color IR Waterproof Camera power supply: DC 12V 
 Current: 110mA 
 Operating Temperature: -10 ° C to +50 ° C 
 Size: 126mm × 65mm × 62mm 
 Weight: 354g 
 Material: Metal 
 Company: Shenzhen City, south Strong Electronics Co., Ltd. 
 Contact: Liu Kunhua 
 Tel :0755 -27,865,266 
 Phone: 18320895213 
 Toll-free :400 -022-6828 
 Website: http://www.szjrse.com, http://jrse2012.wjw.cn 
 Address: 71 District of Bao'an District of Shenzhen City stay the fairy all the way on the 14th, Building G on the third floor 
 Surveillance camera, surveillance camera lens selection, monitoring of the characteristics of the camera manufacturers