What are the general steps to develop photos with traditional printing equipment? What is the content that needs to be mastered slowly? Thanks in advance!

3 color film processing

I don't know exactly. In short, the liquid medicine should be used against the film first, and the unexposed silver salt on the film should be removed (the formula of the liquid medicine and the reaction time between the liquid medicine and the film need to be mastered slowly);

After that, it should be fixed so that the film will not react when exposed to light.

Finally, the photo is developed with color enlarging equipment (the principle is similar to that of a traditional projector, which uses projection to form an image on photographic paper soaked in medicine. At this time, photographic paper is to clean the residual silver salt on the surface. Traditionally, it was washed with water for 30 minutes, but now it is squeezed dry by machine. It should be noted that if we do it now, toxic silver salt will remain on the surface of the photo, and the photo time will easily change color.