Eastman Color Negative
Encyclopedia
Eastman Color Negative, specifically abbreviated as ECN, is a photographic processing
system created by Kodak in the 1950s for the development of monopack color negative motion picture film stock
.
The original process, known as ECN-1, was used from the 1950s to the mid-1970s, and involved development at approximately 25° C for around 7-9 minutes. Later research enabled faster development and more environmental friendly film and process (and thus quicker photo lab turnaround time).
This process allowed a higher development temperature of 41.1° C for around 3 minutes. This new environmental friendly development process is known as ECN-2. It is the standard development process for all modern motion picture color negative developing, including Fuji and other non-Kodak film manufacturers.
All film stocks are specifically created for a particular development process, thus ECN-1 film could not be put into an ECN-2 development bath since the designs are incompatible.
Photographic processing
Photographic processing is the chemical means by which photographic film and paper is treated after photographic exposure to produce a negative or positive image...
system created by Kodak in the 1950s for the development of monopack color negative motion picture film stock
Film stock
Film stock is photographic film on which filmmaking of motion pictures are shot and reproduced. The equivalent in television production is video tape.-1889–1899:...
.
The original process, known as ECN-1, was used from the 1950s to the mid-1970s, and involved development at approximately 25° C for around 7-9 minutes. Later research enabled faster development and more environmental friendly film and process (and thus quicker photo lab turnaround time).
This process allowed a higher development temperature of 41.1° C for around 3 minutes. This new environmental friendly development process is known as ECN-2. It is the standard development process for all modern motion picture color negative developing, including Fuji and other non-Kodak film manufacturers.
All film stocks are specifically created for a particular development process, thus ECN-1 film could not be put into an ECN-2 development bath since the designs are incompatible.