Monitor the camera lens 1/3/1/4, and so what is the meaning of what relationship with the millimeter
This is the size of the CCD board! Have a direct relationship with clarity! That is the pixel! The greater the value of the image the better the better the more clear!
These units are inch is the size of the chip, 1/2 inch 1/3 larger than 1/4 large, the same size lens 1/2 1/3 according to the angle of 3.6 mm lens angle of 1 / 1/3 is more than 70 degrees then 1/4 inch is more than 60 ° 6 mm lens 1/2 inch angle of about 60 degrees 1/3 inch 50 ° about 1/4 inch 40 degrees ~!
1/2 inch - target size is wide 6.4mm * height 4.8mm, diagonal 8mm. 1/3 inch - target size is wide 4.8mm * high 3.6mm, diagonal 6mm. 1/4 inch - target size is wide 3.2mm * height 2.4mm, diagonal 4mm.
