What's the difference between a developed photo and a silver salt photo?

1. Print photos: it belongs to photo printing and is the whole process of digital input, image processing and image output.

2. Silver salt: it is an ink-free photographic chemical printing method.

Second, the principle is different.

1. Print photos: Different from any other imaging method, it is a chemical reaction that gradually generates colors from the inside out, so its color has strong stability.

2. Silver salt: digital data is used to modulate the light beam, so as to directly generate a continuous-tone image on photographic paper or film, or indirectly expose and develop silver halide coated with donor material, and then transfer and fix it on the substrate.

Third, the characteristics are different.

1. Print photos: It has a long history and long image preservation time. Therefore, since its birth, it has been responsible for recording valuable images such as important historical moments and major historical events in human civilization.

2. Silver salt: It has excellent physical and mechanical properties. Excellent impact resistance, high tensile strength, bending strength and compressive strength; Small creep and stable size.

Baidu encyclopedia-silver salt printing

Baidu encyclopedia-photo printing