Eastman Color Positive

Eastman Color Positive (ECP) is a photographic processing system created by Kodak in the 1950s for the development of monopack color positive print for direct projection motion picture film stock. ECP is not used for positive intermediate films as these are "pre-print" elements (e.g. archival or "protection" elements) and are never used for direct projection. One essential difference is the presence of an orange "mask" (i.e., effectively an orange base) on all films processed by ECN, and no "mask" (i.e., effectively a clear base) on all films processed by ECP.

The original process, known as ECP-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 environmentally friendlier film and process (and thus quicker photo lab turnaround time).

This process allowed a higher development temperature of 41.1°C for around three minutes. This new environmentally friendly development process is known as ECP-2. It is the standard development process for all modern motion picture color print developing, including Fuji and other non-Kodak film manufacturers. All film stocks are specifically created for a particular development process, thus ECP-1 film could not be put into an ECP-2 development bath since the designs are incompatible.

Originally, all Eastman Color films, ECN and ECP alike, were on triacetate base (no Eastman Color films were ever made on nitrate base), but recent practice has been for ECN elements to be on triacetate base, so these may be easily spliceable (using lap-type cemented splices, also called "negative assembly" splices), and for ECP elements to be on polyester base, so these are not spliceable (except by using butt-type splices with polyester splicing tapes).

References

Hanson, Wesley T. Jr. "Color Negative and Color Positive Film for Motion Picture Use." Journal of the SMPTE, March 1952, Volume 58, pages 223–238.

Eastman Kodak

Subsidiaries	Chinon Industries Creo Kodak Express Qualex

Cameras	Brownie Canon EOS Canon EOS D2000 Canon EOS D6000 Canon EOS DCS 1 Canon EOS DCS 3 Cine-Kodak Instamatic Kodak 35 Kodak 35 Rangefinder Kodak Brownie Number 2 Kodak DC Series Kodak DC215 Kodak DC3200 Kodak DCS Kodak DCS 100 Kodak DCS 300 series Kodak DCS 400 series Kodak DCS Pro 14n Kodak DCS Pro SLR/c Kodak DCS Pro SLR/n Kodak DX7590 Zoom Digital Camera Kodak EasyShare Kodak Easyshare C1013 Kodak EasyShare C300 Kodak EasyShare C330 Kodak EasyShare C340 Kodak EasyShare C613 Kodak Easyshare C813 Kodak EasyShare CX4200 Kodak EasyShare CX4230 Kodak EasyShare DX4530 Kodak EasyShare DX6440 Kodak EasyShare DX6490 Kodak EasyShare P880 Kodak EasyShare V570 Kodak Pony 828 Kodak Retina Kodak Retina Reflex Kodak Retinette Kodak Signet Kodak Starflash Kodak Stereo Camera Kodak Vigilant camera Kodak Z612 Zoom Digital Camera Kodak Z712 IS ZOOM digital camera Starmatic

Camera film	120 film 126 film 127 film 135 film Disc film Ektachrome Ektar Kodachrome Kodacolor Filmmaking Still photography Kodak High-Speed Infrared Kodak Portra Kodak T-MAX Kodak Tri-X Technical Pan

Other products	Approval proofer Autographic film Carousel slide projector Cinema Digital Sound Cineon Colorama Eastmancolor Eastman Color Negative Eastman Color Positive KAF-10500 Keykode Kodacolor Technology Kodak Ektaprint Electronic Publishing System Kodak Gallery Kodak Photo Printer 6800 Kodak Proofing Software Kodak S-mount Kodak Ultima Kodascope KPR Picture CD Super 8 film Versamat

Media	Changing Focus The Brownies

Technical standards	DX encoding Four Thirds system Micro Four Thirds system

People	George Eastman

Places	Eastman Business Park Kodak Heights (Building 9) Kodak Park Railroad Kodak Photo Spot Kodak Picture Kiosk Kodak, Tennessee Kodak Tower

Court cases	Eastman Kodak Co v. Harold Worden Eastman Kodak Co. v. Image Technical Services, Inc. Vroegh v. Eastman Kodak Co.

Processes	RA-4 process

Organizations	Union of Kodak Workers

Related	You Press the Button, We Do the Rest Sponsorships

This article is issued from Wikipedia - version of the 12/18/2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.