Why the infrared filter I shot is so disgusting. . .

Infrared perspective is just YY of some boring people. In fact, the principle of ordinary infrared photography is to filter out visible light and let only infrared light pass through. Fabric made of chemical fiber in clothes and fabrics has poor shielding ability to infrared light because it does not absorb infrared light, but it is definitely far from perspective. To achieve a true perspective, unless the subject is irradiated with a high-power infrared light source, in this case, even in summer, the subject will obviously feel the thermal radiation (far infrared heating), so it is impossible to sneak a shot. However, because infrared photography ignores visible light, glasses and gems, such as sunglasses, which are opaque or colored because they reflect visible light, will always be transparent in front of infrared cameras because they will not reflect or absorb infrared light in large quantities. This feature is used by some criminal investigation departments in Europe and America to identify suspects who cover their faces with sunglasses. Fuji company has produced an infrared camera specially designed for American judicial department. Infrared photography is to install the filter first, and then define the white balance for the reference color you choose. Generally speaking, the white balance is defined by the color of green plants in the normal field of vision behind the infrared filter. Of course, you can also achieve different effects based on other colors.