Basic knowledge of photography

Photography has two meanings:

One refers to the film crew. Filmmakers are the embodiment of film plastic arts. A film-the fruit of all the creative workers' labor-was shot by a photographer one shot at a time. He "created" with the director, that is to say, as a photographer, his duty is to realize the director's creative intention and artistic conception through photography under the guidance of the director's creative thought.

The second is the process of shooting scene images with film cameras. Usually includes three steps:

Firstly, the shape of the scene is exposed on the photosensitive film through the lens to form a latent image;

Secondly, the exposed photographic film is treated by chemical processes such as development and fixing to obtain a negative image with brightness opposite to the scene or color complementary to the scene, that is, a negative film;

Finally, another photosensitive film is exposed through the negative, and then chemical treatments such as development and fixing are carried out to obtain a positive image with the same brightness or color as the shooting scene, that is, a transparent positive. There are also photos taken by using reverse photosensitive film, and transparent positive films are directly obtained through chemical treatment such as development and fixing.