1, choose the size: according to the installation size, refer to the structure diagram, choose the measurement height (MTTL) and thread specifications;

2, choose the price: according to the price to choose different lens composition of the lens (1P,2P,2G2P,4G) ----1P cheap, 2G2P expensive;

3, select the angle: according to the imaging distance and Sensor specifications to choose the focal length of the lens, and thus determine the imaging angle of the product (FOV);

4, select the brightness: according to the brightness of the environment to choose the relative aperture, the general choice of lens (F2.8-1.4) - F2.8 dark, F1.4 bright;

5, select image quality: confirm the quality of imaging (sharpness, distortion, etc.).