When Was the Wizard of Oz Made? Inside the 1938–39 Production That Built a Technicolor Legend

The Wizard of Oz was made between October 1938 and March 1939, with a few early tests and soundtrack work stretching the calendar: principal photography ran from October 13 to December 23, 1938, then resumed for retakes and pickup shots that continued into March of 1939. Metro-Goldwyn-Mayer released the finished film on August 15, 1939, so the honest answer depends on which question you are asking. If you want the production window, say 1938–1939. If you want the release year, say 1939.

Those two dates are not interchangeable, and the gap between them explains a lot. The movie sits on a technical fault line between silent-era improvisation and factory-era studio filmmaking. It was assembled by a studio system at peak industrial scale, then finished by a second-unit and effects operation that essentially had to invent its own workflow. Understanding when the Wizard of Oz was made means understanding how MGM converted a 1900 children's novel into an 102-minute sound-and-color spectacle in roughly five months of heavy shooting, then spent months refining it.

Mechanism: how MGM built a color film on a budget of time

The core production challenge was that Technicolor's three-strip process demanded enormous light and near-perfect control. A Technicolor camera was a 500-pound prism rig that split incoming light into red, green, and blue negatives through filters, requiring roughly 500 foot-candles of illumination. That is several times the light level of contemporary black-and-white photography. Sets became ovens, and the studio had to cool them with fans and keep actors from overheating.

The camera arrangement had a second consequence. Three-strip Technicolor could not shoot at the same speed or flexibility as monochrome film, and the camera was too bulky for handheld work. So MGM built elaborate crane and dolly systems, and director Victor Fleming (replaced briefly by King Vidor and earlier by Richard Thorpe, whose footage was scrapped) staged the Oz sequences as locked-off, painterly compositions. The Kansas sequences were deliberately desaturated to contrast with Oz, achieved by shooting them in sepia-toned monochrome rather than full color.

The visual-effects load was the real clock-eater. The tornado sequence was created by photographing a muslin stocking twisted around a rotating armature against a rear-projection screen, then compositing the footage. The flying monkeys were real performers on wires, with miniature and matte work layered in. MGM's art department, under Cedric Gibbons, painted Oz's matte backdrops on glass and combined them with live action. Each composite required separate camera passes, and each pass had to be registered against the Technicolor timing.

Plainly: every fantastical shot was a manual, multi-step optical job, and those jobs stacked up on the schedule.

Quantified context: the numbers behind the 1939 release

The production's scale is measurable. The budget landed near USD 2.8 million, a fortune for 1939 and roughly three times the cost of an average MGM feature that year. That figure covered the Kansas farm set, the Oz sets (roughly 60), the costumes, and the Technicolor fees, which MGM paid in part by giving Technicolor a share of the film's gross.

The calendar breaks down cleanly:

October 13, 1938: principal photography begins at MGM's Culver City stages December 23, 1938: main shooting wraps January–March 1939: retakes, pickup shots, and effects plates March 1939: scoring work by Herbert Stothart and the songs of Harold Arlen and E. Yip Harburg finalized August 15, 1939: premiere in Hollywood August 25, 1939: wide release

Casting had consumed months before any film rolled. Judy Garland, born in 1922, was 16 during principal photography, and the studio had to fit her with a corset-like bodice to flatten her figure and make her read younger on screen. Bert Lahr's Cowardly Lion makeup required hours in the chair daily. These practical constraints eat shooting days, and schedule overruns here were measured in weeks.

The box-office picture is often misreported. The film grossed roughly USD 3 million in its first release, which against its budget and distribution costs meant MGM did not see a large theatrical profit initially. It became a legacy property through re-releases, television, and home video, not a first-run windfall.

Timeline: the five-month shoot and its aftermath

The table shows why "made" is a slippery word. The film was conceived in 1937, shot in 1938, finished in 1939, and released in 1939.

Edge cases: the directors who came and went

The Wizard of Oz had four directors touch it, and that is not trivia. It explains tonal inconsistencies that sharp-eyed viewers catch. Richard Thorpe shot early Kansas and Oz footage that MGM executives disliked, reportedly because he made Garland's Dorothy feel too glamorous. His footage was scrapped.

George Cukor directed for a brief stretch and pushed the Kansas sequences toward a homespun, plain look that stuck. Victor Fleming then took over and shot the bulk of the film, leaving in early 1939 to replace George Cukor on Gone with the Wind. King Vidor directed the remaining Kansas scenes, including the sepia-toned bookend sequences.

The directorial turnover meant continuity came from MGM's design department and cinematographer Harold Rosson rather than a single auteur vision. That is a professional caveat: the film's coherence is institutional, not personal.

Misconceptions: what the 1938–39 dates do not tell you

Several persistent errors cluster around the production date. The first is that the film was made in 1939. Shooting was overwhelmingly 1938, and the March 1939 window is finishing work. The second is that the studio shot it in a single color process. It did not; Kansas is sepia monochrome, and Oz is three-strip Technicolor.

The third is the myth that the film was a flop. It was profitable enough across its initial release and re-releases to justify the Technicolor investment, though not a sensation. A fourth is that Garland was a child when she played Dorothy. She was 16, and the studio worked hard to make that invisible.

A counterintuitive detail worth knowing: the ruby slippers were silver in L. Frank Baum's novel. MGM changed them to red because red photographed dramatically in Technicolor and read as a strong visual focal point. That decision was a color-process consideration, not a literary one, which is exactly the kind of choice that the 1939 technology forced.

Practical actions: verifying production dates for yourself

If you are checking the production date for research or a citation, use these steps rather than trusting a single summary:

Check the American Film Institute Catalog entry, which lists production start and finish dates from studio records. Confirm release versus production dates separately; the AFI catalog distinguishes them. Cross-check against the Academy of Motion Picture Arts and Sciences records for the Technicolor and effects credits. Treat 1938 as the shooting year and 1939 as the completion and release year in any timeline. Reject secondary sources that cite only a release year without production dates.

Red flags: any source claiming a 1937 release, a 1940 release, or a single-year production window without distinguishing shooting from finishing. Any claim that the entire film was shot in 1939. Any source that says the ruby slippers were always red in the source novel.

Limitations: what the record can and cannot settle

Production dates for the film are well documented by the studio and by the AFI, but the exact cut-over dates for retakes and the precise division of labor between Fleming and Vidor remain reconstructed from memos rather than a complete daily log. Some pickup-shot dates in early 1939 are approximate. The effects work was not a distinct, separately documented phase, so the boundary between principal photography and finishing is porous.

This article is general educational information about film history. It is not a substitute for primary archival research at the Academy or AFI, and anyone citing production dates for academic or legal purposes should consult those archives directly.