The police high-definition infrared camera does not turn on the flash at night. Is the picture clear?

Unlike visible light, infrared light radiates outward from the surface of an object. Because of this, infrared photography can't be as clear as ordinary photography, only the general outline and basic features can be seen clearly (the police are basically enough).

In fact, the infrared camera is not a high-tech secret device. Ordinary digital cameras can be changed into infrared cameras. Compared with ordinary digital cameras, infrared cameras lack a low-pass filter. If the low-pass filter covered on the CMOS or CCD of the digital camera is removed, it will become an infrared camera, and you can take pictures at night without turning on the flash, but the style of the photos taken is completely different, and the clarity is not expected. Because infrared rays will affect the definition of digital photography, camera manufacturers have to install filters on photosensitive elements to filter out all infrared rays and improve image quality. (In fact, it is not completely filtered out. A little infrared will pass through the filter and run to CMOS or CCD to participate in imaging, but it has no effect on image quality. )