Tutorials Video

Herbert Kalmus: Technicolor as a Service Business

By Infinite Creation · Profile

1881-1963

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At a Glance

Herbert Thomas Kalmus (1881-1963) co-founded Technicolor in 1915 and led it through four generations of process, culminating in the three-strip beam-splitter camera of 1932 that defined studio-era colour cinema. His decisive move was commercial: Technicolor never sold its technology, but rented cameras with crews and controlled processing and printing.

Lived: 1881-1963, United States
Anchor year: 1932, three-strip Technicolor
Strand: canon

Career

The problem as it stood

Early colour processes were fragile, dim, prone to fringing and required special projection. Studios had been burned by systems that looked good in demonstration and failed in production, and colour was widely regarded as a gimmick.

What he actually did

Kalmus iterated: additive two-colour projection, then subtractive two-colour cemented prints, then imbibition printing, then in 1932 the three-strip camera exposing three negatives simultaneously through a beam splitter. Alongside it he built a service model: rent the camera, supply the operator and a colour consultant, do the processing.

How it worked

A prism behind the lens splits the image. One negative records green directly, and a bipack behind a magenta filter records red and blue. Three separations from one viewpoint at one instant eliminates the fringing that plagued sequential-exposure processes. Troland's imbibition then prints them.

What it made possible

Colour as a reliable production option: Becky Sharp (1935), The Wizard of Oz and Gone with the Wind (1939). The service model also let Technicolor enforce technical standards, which is precisely what made its output consistent and what filmmakers found constraining.

What happened to him

He led Technicolor until 1959. Eastmancolor's single-strip negative in the 1950s destroyed the three-strip business by making colour available without renting anything from anybody, though Technicolor's printing survived longer.

Where the credit landed

Kalmus is credited generously, and the credit conflates business leadership with invention: the imbibition patents were Troland's and the camera was a team product. The service model is genuinely his and is arguably the more important contribution, because it is what made colour dependable enough for studios to risk. It is also the mechanism that put his then-former wife into the middle of the corpus's hardest credit dispute.

Known For

Technicolor rented rather than sold: that is the business innovation.
Three-strip captures all three separations at one instant, eliminating fringing.
Eastmancolor killed the three-strip business by removing the need to rent.

Knowledge Base

What You'll Learn

Controlling the whole chain is how a colour process becomes a house style.

Why the service model mattered more than the camera

Renting the camera with an operator, supplying a colour consultant and controlling processing meant Technicolor could guarantee results, which is what persuaded risk-averse studios. It also meant Technicolor decided how colour was used, which directors resented. The look people remember as "Technicolor" is partly the process and partly a house style enforced by contract, and that is exactly the terrain the Natalie Kalmus dispute occupies.

Where This Fits

Technicolor was a capture and printing system, and A History of Broadcast Technology follows colour on to transmission and display.

FAQ

Q: What was three-strip Technicolor?
A: A camera using a beam-splitting prism to expose three negatives simultaneously. One for green, and a bipack recording red and blue. So all three colour separations came from one viewpoint at one instant. Introduced in 1932.

Q: Why did Technicolor decline?
A: Eastmancolor and similar single-strip colour negatives in the 1950s let studios shoot colour on ordinary cameras without renting Technicolor equipment or crews.

Vocabulary

Additive and subtractive colour. Additive systems build colour by combining coloured light, and subtractive systems by filtering white light through dyes. Projection was additive at first and film moved to subtractive.

Beam splitter. A prism or mirror arrangement dividing incoming light so several strips of film can be exposed simultaneously through different filters. Allows one lens to record separate colour records at once.

Colour separation. Recording a scene as several images, each capturing one part of the spectrum. Recombining them reconstructs the colour, and any misalignment between them shows as coloured fringing.

Dye transfer. A printing process where dyes are transferred from separate matrices onto one final print. Produces stable colour and gives considerable control over the final result.

Sources

A paper and a patent were each checked against their own records, and between them they show where the line runs. Checked 20 August 2026.

H. T. Kalmus, Technicolor Adventures in Cinemaland. Journal of the Society of Motion Picture Engineers, volume 31, issue 6, pages 564 to 585, December 1938. Kalmus's own account of the company, sole author, published six years after the three-strip camera arrived.
US Patent 2,072,091, Cinematographic Camera. The three strip beam splitter camera, filed 20 August 1931 and granted 2 March 1937, assigned to Technicolor. It names Joseph A. Ball and Gerald F. Rackett. Kalmus is not on it, which is the specific evidence behind the statement above that the camera was a team product.