2-perf pulldown

2-perf pulldown

Techniscope or 2-Perf is a 35mm motion picture camera film format introduced by Technicolor Italia in 1963.[1] The Techniscope format uses a two film-perforation negative pulldown per frame, instead of the standard four-perforation frame usually exposed in 35mm film photography. Techniscope's 2.33:1 aspect ratio is easily cropped to the 2.39:1 widescreen ratio,[2] because it uses half the amount of 35mm film stock and standard spherical lenses. Thus, Techniscope release prints are made by anamorphosizing and enlarging each frame by a factor of two.

Techniscope-photographed films

During its primary reign, 1960–1980, more than 350 films were photographed in Techniscope;[3] The Pharaoh's Woman (released 10 December 1960) was the first.[4] Given its considerable production cost economy, but lesser image quality, Techniscope was primarily an alternative format used by low-budget film makers, mainly in the horror and western genres. Since it originated in Italy, most Techniscope format films were Italian, generally European.

In the U.S., Techniscope was used in the low budget A.C. Lyles Westerns for Paramount Pictures and Universal Studios briefly used it extensively in the mid to late 1960s. Producer Sid Pink recalled that unlike Europe, the American film studios were charged by the Technicolor company for using Techniscope in their film prints.[5]

Regarding the diminished image quality, film reviewer Roger Ebert wrote about the film Counterpoint (1968): "The movie is shot in Techniscope, a process designed to give a wide-screen picture while saving film and avoiding payment of royalties to the patented processes like Panavision. In this film, as in "Harry Frigg", Techniscope causes washed-out color and a loss of detail. Universal shouldn't be so cheap."[6]

Recent films shot with 2-perf 35mm "Techniscope" include I'm Yours (2012), Silver Linings Playbook (2012) and Argo (2012)

Techniscope's commercial revival

Techniscope employs standard 35mm camera films, which are suitable for 2-perf (Techniscope), 3-perf, conventional 4-perf (spherical or CinemaScope), and even 6-perf (Cinerama) and 8-perf (VistaVision), as all of those processes listed employ the same camera and intermediate films, and positive print films intended for direct projection (although 2-, 3- and 8-perfs are not distribution formats).

In 1999, in Australia, MovieLab film laboratory owner Kelvin Crumplin revived the Techniscope format renamed as MultiVision 235, attempting to commercialise it as a cinematography format alternative to the Super 16mm format. His proposition was that it yielded a 35mm-quality image (from which could be derived natural 2.35:1 and 1.85:1 aspect ratio images) for the same cost as Super 16mm cinematography.

Mr Crumplin established MovieLab to provide telecine and film processing and printing services, and, with engineer Bruce McNaughton of The Aranda Group, Victoria, Australia, engineered and produced Arriflex BL1 and Arriflex IIC 35mm cameras for the Techniscope 2-perf format.[3]

Aaton, Panavision, and Arriflex have modern 2-perf cameras either available now or soon to be released (12/2007). Aranda in Australia is also currently converting cameras like Arriflex 2A/B/C Arri 3, Arri BL, Mitchell, Eclair, Moviecam.

Factory-made kits for certain Mitchell and Mitchell-derived cameras are occasionally available on auction sites. In the specific case of a Mitchell, the kit includes a replacement aperture plate and cam for the film movement, a replacement gear for the camera body, and, for a reflex camera, a replacement focusing screen. As all Mitchell cameras incorporate the provision for a "hard mask" within the movement itself, it is often possible to keep the 4-perf aperture plate, and insert a 2-perf mask in the mask slot, as an economy measure.

Techniscope vs. anamorphic: advantages and disadvantages

Techniscope's advantages over anamorphic CinemaScope are:

  • More economical: half the film stock used in 4-perforation frame cinematography; half the stock, same running time, less negative to develop.
  • Cinematography requires simpler, but technically superior, spherical lenses.
  • Film stock loads last twice as long; 2-perf stock shoots at 45fpm (24fps), while 4-perf stock shoots at 90fpm.
  • (may be seen aesthetically as either an advantage or disadvantage:) The circle of confusion of Techniscope is circular (due to its spherical lenses), whereas that of CinemaScope is elliptical (due to its anamorphic lenses).

Techniscope's disadvantages against CinemaScope:

  • For distribution prints, the frame is enlarged from a 2-perf flat ratio to a 4-perf anamorphic ratio. Enlarging the image to the 35mm print subsequently enlarges the negative's film grain. (Although some cineastes sought this visual feel for the story; e.g. westerns photographed to appear unpolished, thereby enhancing the period settings' verisimilitude.) This step is also an additional production expense. If the enlargement process is done optically, the generation loss will add even more grain and reduce the image sharpness. Alternatively, the enlargement can be done as part of the Digital Intermediate (DI) process. This involves digitally scanning the 2 perf film negative. Output to film is done with a film recorder, such as the Arrilaser.
  • Two-perforation cameras and telecine installations are rare. (Note: As of early 2008 Aaton is coming out with their newly designed 2 perf-native (3 perf user-switchable) Aaton Penelope camera. Konvas cameras have been available in 2 perf for a while, and Arri is making 2 perf gates for their Arricams soon, available only through the rental dealers though. And more and more telecine suites have 2 perf gates for their film scanners.)
  • The narrower frame line (between frames) emphasises imperfections (e.g. hairs in the gate, lens flares).

Note: When transferring a Techniscope film to a digital video format, the 2-perf negative or 2-perf interpositive A/B rolls can be used, bypassing any blown-up 4-perf element. Many DVD editions have been transferred this way and the results have frequently been stunning, e.g. Blue Underground's The Bird with the Crystal Plumage and MGM's special editions of Sergio Leone's Westerns.


  • Film: 35mm film running vertically using two perforations per frame, running at 24 frames per second.
  • Film area: .868" (22 mm) x .373" (9.47 mm)
  • Film aspect ratio: 2.33:1
  • Print aspect ratio 2.35:1 (2.39:1 after 1970 SMPTE revision)

See also


External links

  • Internet Movie Database (IMDb) list of Techniscope films
  • http://www.widescreenmuseum.com/widescreen/wingts1.htm
  • Early proposal for 2-perf
  • CML discussion of 2-perf
  • Aaton's announcement of a new 2-perf camera