The black card in photography has a magical meaning

To put it simply, a black card is to use a piece of black non-reflective paper to cover the brighter parts of the picture, so that the darker parts can be photographed for a longer time. When using a black card, you need to shake it slightly to avoid leaving traces of the black card, so the black card technique is called shaking the black card.

As the name suggests, it is a small black card! The material can be cardboard, plastic... and other slightly hard materials, but the surface needs to be matte, matted, and hair-planted to reduce reflection and refraction. Black cards can be purchased in photographic equipment stores (not sure). The friend below uses ordinary black cardboard and cuts it at home (if you want to be cautious, you can also paste black flannel on the surface to reduce Reflection and refraction, you can even have one black side and one white side, the white side is used to correct the white balance, and the black side is of course the black card). Below is a booklet with a black surface (similar to a portable address book), which can be used to note notes or as a black card.