After photographic exposure. The process of latent image formation

The imaging principles of silver salt and electrons are different

Silver salt is silver halide, which is decomposed into silver ions by light. This is the latent image. Through development, other silver halide is removed, leaving What is on the negative is the exposure image. Because the stronger the light, the more silver there is and the darker it becomes, so what appears on the film is a negative image.

Digital is that light shines on photosensitive electronic components to generate electrical signals, which are then filtered and amplified, and then calculated into brightness information. Based on the coordinate positions of the three-color photosensitive components, colors are generated and finally integrated into a image.