How is infrared photography realized? Do you need to master any shooting skills?

Infrared photography is a relatively different shooting method. It is different from the traditional black-and-white color photos, and uses infrared sensitive equipment and infrared filters. The photos taken are so shocking that people can't put it down. At the same time, infrared rays can penetrate some materials and clothes (fine chemical fiber, smoke, water vapor, etc.). ) Compared with visible light.

Key points:

In traditional infrared photography, because the film itself solves the problem of selecting the wavelength of light, no special filter is needed when shooting. However, due to the long wavelength of infrared, the refractive index in optical glass is smaller than that of visible light. When imaging through the same lens, the imaging position of infrared is behind the visible light, so it is necessary to correct the focusing system of the camera. In order to facilitate infrared photography, the previous manual focusing lens often has an "R" mark or a red dot mark to facilitate focal length correction.

If the subject is far away, the focusing error of infrared imaging and visible imaging is relatively small and can be basically ignored. If the shooting distance is close, it is necessary to correct the focal length. The correction method is to adjust the focal length according to the daily shooting method of visible light, and then turn the focusing line forward slightly to aim at the "R" mark or the red dot mark.

Exposure control:

The change of mid-infrared is very violent, and the exposure of infrared photography is difficult to control. Although photometry equipment is available, it can only be used as a reference, and photographers usually need to determine the exposure according to experience.

For more red and infrared photography skills, please refer to Yachang Film Art website. The famous photographer Ma Jingpo's photographic works and experience, as well as many photographers' works of different styles, are for learning and sharing.