How Do We Prepare Photographic Films?
As we all know that for taking a photo and making a movie we use photographic film. In a camera box the vital component is the film. Initially it was a type of paper. Chemical emulsion is then applied on it.
When the silver compound emulsion on photographic film is sufficiently exposed to light it is divided into light and shadow. The coating on the film is termed as ‘light sensitive’ substance. After taking a picture the film is washed with different chemicals to finish ‘developing’, ‘fixing’ and then negative are printed with black and white parts inverted. The light rays passing through negative falls on the photo sensitive emulsion paper and light and shadow shapes are corrected. Developing, fixing, printing are termed as processing. Means a complete photo is ready only after finishing all the 3 processes.