Usually, to perfectly achieve desired high-definition image acquisition, only using high-definition industrial cameras is not enough. The high-definition industry lens is also indispensable for the whole system.
We often hear some manufacturers advertise that their products have reached 5 million, 8 million,14 million or even 29 million pixels in the security industry. This is a great leap compared to the 2 million and 3 million pixels commonly used for monitoring. Whether these pixels can be really reached or just achieved through interpolation, we can first check if the effect of the product is so significant.
HD industry lens:
When considering how many pixels are in the industry lens, we should also pay attention to one element - the size of the sensor (or pixel size). For the sensor with the same pixel, the size of the sensor determines the size of its single pixel and determines the image sharpness.
For example, most of the 5-million-pixel industrial cameras commonly seen in the market correspond to 2/3"(1") sensors. The corresponding imaging specification of the 2/3" sensor is 8.8mm × 6.6mm. It can be roughly estimated that the size of single-pixel points is about 3.4μm × 3.4μm, while that of the common 3-million-pixel products are mostly only 1/3" (1/2"). And, as the corresponding imaging specification of 1/3" sensors is 4.8mm × 3.6mm, the size of the single-pixel point can be calculated as 2.4 μm × 2.4 μm.
Compared with the 5-million-pixel sensor, the total pixel of the 3-million-pixel sensor is near twice as short. However, the sensor area of 3-million-sensor is twice smaller, and its single pixel is 1 μm smaller, which are also important factors affecting the whole image sharpness.