A Few Words About A few words about...™ Johnny Guitar - Olive Signature -- in Blu-ray (1 Viewer)

[TonyD]

Who wants to buy my old one, it's still sealed.........

 

[Trancas]

The evolution of the TruColor process has always confused me, and I've been seriously puzzled for years as to what actual cinematography was utilized for this favorite -- some kind of 3-strip TruColor? Some single-strip Eastman knock-off? And how were the original release prints created? Some kind of 3-strip IB process? Inquiring minds want to know...

On further thought..... if 3 color Trucolor was just filming and printing on Eastman color stock why would original black and white separations exist?

"Trucolor switched over to the negative/positive process to offer the three color range. Kodak color negatives were used for the principal photography and then separated into black and white preprint. Du Pont positive stock (type 875) was used for the release printing. This stock had a Monopack structure that used synthetic polymer rather than gelatin as a color former. Shortly afterward, Du Pont left the film business and Trucolor was phased out."

https://books.google.com/books?id=DFXhGtNKh0wC&pg=PA57&lpg=PA57&dq=DuPont+positive+stock+(type+875)&source=bl&ots=Ff9O8UUx-r&sig=7mrjAzIIbCmUFvBMIuLWiTW-Ycc&hl=en&sa=X&ved=0ahUKEwjrk9u4oJ_PAhVDph4KHcaqBEcQ6AEIIzAB#v=onepage&q=DuPont positive stock (type 875)&f=false

"Du Pont has produced a color release positive stock suitable for making color prints in the professional motion picture field. It is designed to be printed from three black and white separation negatives and to be developed in color during a single passage through a developing machine of conventional construction. The film has a monopack structure consisting of three emulsion layers superimposed on one side of standard cine film base. Each layer embodies in a unique manner an appropriate colorless dye generator capable of forming a dye image under development.

In the release positive worked out by du Pont only two components are employed — silver halide and a synthetic polymer which plays the role of both the gelatin and the color former previously used. Three different polymers have been made for the present film. Each one contains an appropriate dye-generator as a part of the complex polymer molecule. Arrangement of layers departs from that heretofore used in monopack films. The important magenta layer is on top while the least important yellow layer is on the bottom. This contributes to sharpness of definition. …the printing is done on a registration printer and any one of the three separation negatives can be directed into the appropriate layer by the proper selection of printing light."

http://zauberklang.ch/filmcolors/timeline-entry/1309/#/

 

[Bob Furmanek]

From Journal of the SMPTE: May 1951

The first three-color Trucolor production was HONEYCHILE with Judy Canova.

 

[Trancas]

What do prints on Du Pont 875 look like today? As faded as most early color coupler print films from Eastman? Was the color originally as harshly contrasted as your Honeychile examples?

 

[Bob Furmanek]

No, those frames are from a 16mm Kodachrome print.