Cinematography

From Wikipedia, the free encyclopedia
"Cinematographic" redirects here. For the 2007 rock album, see Cinematographic (album).

Cinematography (from Greek: κίνημα, kinema "movements" and γράφειν, graphein "to record") is the art or science of motion picture photography.[1] It is the technique of movie photography, including both the shooting and development of the film.[2] The cinematographer could also be referred to as the film director's main visual collaborator.[3]

History

Further information: History of film

Cinematography is an art form in the field of filmmaking. Although the exposing of images on light-sensitive elements dates to the early 19th century,[4] motion pictures demanded a new form of photography and a new aesthetic.

On June 19, 1873, Eadweard Muybridge successfully photographed a horse named "Sallie Gardner" in fast motion using a series of 24 stereoscopic cameras. The cameras were arranged along a track parallel to the horse's, and each camera shutter was controlled by a trip wire triggered by the horse's hooves. They were 21 inches apart to cover the 20 feet taken by the horse stride, taking pictures at one thousandth of a second.[5]

Nine years later, in 1882, French scientist Étienne-Jules Marey invented a chronophotographic gun, which was capable of taking 12 consecutive frames a second, recording all the frames of the same picture. The second experimental film, Roundhay Garden Scene, filmed by Louis Le Prince on October 14, 1888 in Roundhay, Leeds, England, is the earliest surviving motion picture. The first though to design a successful apparatus was W. K. L. Dickson, working under the direction of Thomas Alva Edison, called the Kinetograph, and patented in 1891. This camera took a series of instantaneous photographs on standard Eastman Kodak photographic emulsion coated onto a transparent celluloid strip 35 mm wide. The results of this work were first shown in public in 1893, using the viewing apparatus also designed by Dickson, and called the Kinetoscope. Contained within a large box, only one person at a time looking into it through a peephole could view the movie. It was not a commercial success but in the following year, Charles Francis Jenkins and his projector, the Phantoscope,made a successful audience viewing while Louis and Auguste Lumière perfected the Cinématographe, an apparatus that took, printed, and projected film in Paris in December 1895.

Film technique

Georges Méliès (left) painting a backdrop in his studio

The first film cameras were fastened directly to the head of a tripod or other support, with only the crudest kind of levelling devices provided, in the manner of the still-camera tripod heads of the period. The earliest film cameras were thus effectively fixed during the shot, and hence the first camera movements were the result of mounting a camera on a moving vehicle. The first known of these was a film shot by a Lumière cameraman from the back platform of a train leaving Jerusalem in 1896, and by 1898 there were a number of films shot from moving trains. Although listed under the general heading of "panoramas" in the sales catalogues of the time, those films shot straight forward from in front of a railway engine were usually specifically referred to as "phantom rides".

In 1897, Robert W. Paul had the first real rotating camera head made to put on a tripod, so that he could follow the passing processions of Queen Victoria's Diamond Jubilee in one uninterrupted shot. This device had the camera mounted on a vertical axis that could be rotated by a worm gear driven by turning a crank handle, and Paul put it on general sale the next year. Shots taken using such a "panning" head were also referred to as "panoramas" in the film catalogues of the first decade of the cinema.

The standard pattern for early film studios was provided by the studio which Georges Méliès had built in 1897. This had a glass roof and three glass walls constructed after the model of large studios for still photography, and it was fitted with thin cotton cloths that could be stretched below the roof to diffuse the direct ray of the sun on sunny days. The soft overall light without real shadows that this arrangement produced, and which also exists naturally on lightly overcast days, was to become the basis for film lighting in film studios for the next decade.

Effects

Unique among all the one minute long films made by the Edison company, which recorded parts of the acts of variety performers for their Kinetoscope viewing machines, was The Execution of Mary Queen of Scots. This showed a person dressed as the queen placing her head on the execution block in front of a small group of bystanders in Elizabethan dress. The executioner brings his axe down, and the queen's severed head drops onto the ground. This trick was worked by stopping the camera and replacing the actor with a dummy, then restarting the camera before the axe falls. The two pieces of film were then trimmed and cemented together so that the action appeared continuous when the film was shown.

This film was among those exported to Europe with the first Kinetoscope machines in 1895, and was seen by Georges Méliès, who was putting on magic shows in his Theatre Robert-Houdin in Paris at the time. He took up filmmaking in 1896, and after making imitations of other films from Edison, Lumière, and Robert Paul, he made Escamotage d'un dame chez Robert-Houdin (The Vanishing Lady). This film shows a woman being made to vanish by using the same stop motion technique as the earlier Edison film. After this, Georges Méliès made many single shot films using this trick over the next couple of years.

Double exposure

A scene inset inside a circular vignette showing a "dream vision" in Santa Claus (1898)

The other basic technique for trick cinematography involves double exposure of the film in the camera, which was first done by George Albert Smith in July 1898 in the UK. Smith's The Corsican Brothers (1898) was described in the catalogue of the Warwick Trading Company, which took up the distribution of Smith's films in 1900, thus:

"One of the twin brothers returns home from shooting in the Corsican mountains, and is visited by the ghost of the other twin. By extremely careful photography the ghost appears *quite transparent*. After indicating that he has been killed by a sword-thrust, and appealing for vengeance, he disappears. A ‘vision’ then appears showing the fatal duel in the snow. To the Corsican's amazement, the duel and death of his brother are vividly depicted in the vision, and overcome by his feelings, he falls to the floor just as his mother enters the room."

The ghost effect was done by draping the set in black velvet after the main action had been shot, and then re-exposing the negative with the actor playing the ghost going through the actions at the appropriate point. Likewise, the vision, which appeared within a circular vignette or matte, was similarly superimposed over a black area in the backdrop to the scene, rather than over a part of the set with detail in it, so that nothing appeared through the image, which seemed quite solid. Smith used this technique again in Santa Claus (1898).

Georges Méliès first used superimposition on a dark background in La Caverne maudite (The Cave of the Demons) made a couple of months later in 1898, and elaborated it with multiple superimpositions in the one shot in Un Homme de têtes (The Four Troublesome Heads). He created further variations in subsequent films.

Other special techniques

G.A. Smith initiated the technique of reverse motion and also improved the quality of self-motivating images. This he did by repeating the action a second time, while filming it with an inverted camera, and then joining the tail of the second negative to that of the first. The first films using this were Tipsy, Topsy, Turvy and The Awkward Sign Painter, the latter which showed a sign painter lettering a sign, and then the painting on the sign vanishing under the painter's brush. The earliest surviving example of this technique is Smith's The House That Jack Built, made before September 1901. Here, a small boy is shown knocking down a castle just constructed by a little girl out of children's building blocks. A title then appears, saying "Reversed", and the action is repeated in reverse, so that the castle re-erects itself under his blows.

Cecil Hepworth took this improved upon this technique by printing the negative of the forwards motion backwards frame by frame, so that in the production of the print the original action was exactly reversed. To do this, Hepworth built a special printer in which the negative running through a projector were projected into the gate of a camera through a special lens giving the same-size image. This arrangement came to be called a "projection printer", and eventually an "optical printer". With it Hepworth made The Bathers in 1900, in which bathers who have undressed and jumped into the water appear to spring backwards out of it, and have their clothes magically fly back onto their bodies.

The use of different camera speeds also appeared around 1900. Robert Paul's On a Runaway Motor Car through Piccadilly Circus (1899), had the camera turn so slowly that when the film was projected at the usual 16 frames per second, the scenery appeared to be passing at great speed. Cecil Hepworth used the opposite effect in The Indian Chief and the Seidlitz Powder (1901), in which a naïve Red Indian eats a lot of the fizzy stomach medicine, causing his stomach to expand and then he then leaps around balloon-like. This was done by cranking the camera faster than the normal 16 frames per second giving the first "slow motion" effect.

The cinematographer

In the infancy of motion pictures, the cinematographer was usually also the director and the person physically handling the camera. As the art form and technology evolved, a separation between director and camera operator emerged. With the advent of artificial lighting and faster (more light sensitive) film stocks, in addition to technological advancements in optics, the technical aspects of cinematography necessitated a specialist in that area.

Cinematography was key during the silent movie era—with no sound apart from background music and no dialogue, the films depended on lighting, acting, and set.

In 1919, in Hollywood, the new motion picture capital of the world, one of the first (and still existing) trade societies was formed: the American Society of Cinematographers (ASC), which stood to recognize the cinematographer's contribution to the art and science of motion picture making. Similar trade associations have been established in other countries, too.

The ASC defines cinematography as:

a creative and interpretive process that culminates in the authorship of an original work of art rather than the simple recording of a physical event. Cinematography is not a subcategory of photography. Rather, photography is but one craft that the cinematographer uses in addition to other physical, organizational, managerial, interpretive and image-manipulating techniques to effect one coherent process.[6]

Aspects

Numerous aspects contribute to the art of cinematography, including:

Image sensor and film stock

Cinematography can begin with rolls of film or a digital image sensor. Advancements in film emulsion and grain structure provided a wide range of available film stocks. The selection of a film stock is one of the first decisions made in preparing a typical film production.

Aside from the film gauge selection — 8 mm (amateur), 16 mm (semi-professional), 35 mm (professional) and 65 mm (epic photography, rarely used except in special event venues) — the cinematographer has a selection of stocks in reversal (which, when developed, create a positive image) and negative formats along with a wide range of film speeds (varying sensitivity to light) from ISO 50 (slow, least sensitive to light) to 800 (very fast, extremely sensitive to light) and differing response to color (low saturation, high saturation) and contrast (varying levels between pure black (no exposure) and pure white (complete overexposure).

Advancements and adjustments to nearly all gauges of film created the "super" formats wherein the area of the film used to capture a single frame of an image is expanded, although the physical gauge of the film remains the same. Super 8 mm, Super 16 mm and Super 35 mm all utilize more of the overall film area for the image than their "regular" non-super counterparts.

The larger the film gauge, the higher the overall image resolution clarity and technical quality.

The techniques used by the film laboratory to process the film stock can also offer a considerable variance in the image produced. By controlling the temperature and varying the duration in which the film is soaked in the development chemicals and by skipping certain chemical processes (or partially skipping all of them), cinematographers can achieve very different looks from a single film stock in the laboratory. Some techniques that can be used are push processing, bleach bypass and cross processing.

Although the majority of cinema still uses film, much of modern cinema uses digital cinematography and has no film stocks[citation needed], but the cameras themselves can be adjusted in ways that go far beyond the abilities of one particular film stock. They can provide varying degrees of color sensitivity, image contrast, light sensitivity and so on. One camera can achieve all the various looks of different emulsions, although it is heavily argued as to which method of capturing an image is the "best" method. Digital image adjustments (ISO, contrast etc.) are executed by estimating the same adjustments that would take place if actual film were in use, and are thus vulnerable to the cameras sensor designers perceptions of various film stocks and image adjustment parameters.

Filters

Filters, such as diffusion filters or color-effect filters, are also widely used to enhance mood or dramatic effects. Most photographic filters are made up of two pieces of optical glass glued together with some form of image or light manipulation material between the glass. In the case of color filters, there is often a translucent color medium pressed between two planes of optical glass. Color filters work by blocking out certain color wavelengths of light from reaching the film. With color film, this works very intuitively wherein a blue filter will cut down on the passage of red, orange and yellow light and create a blue tint on the film. In black-and-white photography, color filters are used somewhat counter intuitively; for instance a yellow filter, which cuts down on blue wavelengths of light, can be used to darken a daylight sky (by eliminating blue light from hitting the film, thus greatly underexposing the mostly blue sky), while not biasing most human flesh tone. Certain cinematographers, such as Christopher Doyle, are well known for their innovative use of filters. Filters can be used in front of the lens or, in some cases, behind the lens for different effects.

Lens

Lenses can be attached to the camera to give a certain look, feel, or effect by focus, color, etc.

As does the human eye, the camera creates perspective and spatial relations with the rest of the world. However, unlike one's eye, a cinematographer can select different lenses for different purposes. Variation in focal length is one of the chief benefits. The focal length of the lens determines the angle of view and, therefore, the field of view. Cinematographers can choose from a range of wide-angle lenses, "normal" lenses and long focus lenses, as well as macro lenses and other special effect lens systems such as borescope lenses. Wide-angle lenses have short focal lengths and make spatial distances more obvious. A person in the distance is shown as much smaller while someone in the front will loom large. On the other hand, long focus lenses reduce such exaggerations, depicting far-off objects as seemingly close together and flattening perspective. The differences between the perspective rendering is actually not due to the focal length by itself, but by the distance between the subjects and the camera. Therefore, the use of different focal lengths in combination with different camera to subject distances creates these different rendering. Changing the focal length only while keeping the same camera position doesn't affect perspective but the camera angle of view only. A Zoom lens allows a camera operator to change their focal length within a shot or quickly between setups for shots. As prime lenses offer greater optical quality and are "faster" (larger aperture openings, usable in less light) than zoom lenses, they are often employed in professional cinematography over zoom lenses. Certain scenes or even types of filmmaking, however, may require the use of zooms for speed or ease of use, as well as shots involving a zoom move. As in other photography, the control of the exposed image is done in the lens with the control of the diaphragm aperture. For proper selection, the cinematographer needs that all lenses be engraved with T-Stop, not f-stop, so that the eventual light loss due to the glass doesn't affect the exposure control when setting it using the usual meters. The choice of the aperture also affects image quality (aberrations) and depth of field (see below).

Depth of field and focus

A stern looking man and a woman sit on the right side of a table with documents on the table. A top hat is on the table. An unkempt man stands to the left of the picture. In the background a boy can be seen through a window playing in the snow.
A deep focus shot from Citizen Kane (1941): everything, including the hat in the foreground and the boy (young Charles Foster Kane) in the distance, is in sharp focus.

Focal length and diaphragm aperture affect the depth of field of a scene — that is, how much the background, mid-ground and foreground will be rendered in "acceptable focus" (only one exact plane of the image is in precise focus) on the film or video target. Depth of field (not to be confused with depth of focus) is determined by the aperture size and the focal distance. A large or deep depth of field is generated with a very small iris aperture and focusing on a point in the distance, whereas a shallow depth of field will be achieved with a large (open) iris aperture and focusing closer to the lens. Depth of field is also governed by the format size. If one considers the field of view and angle of view, the smaller the image is, the shorter the focal length should be, as to keep the same field of view. Then, the smaller the image is, the more depth of field is obtained, for the same field of view. Therefore, 70mm has less depth of field than 35mm for a given field of view, 16mm more than 35mm, and video cameras even more depth of field than 16mm. As videographers try to emulate the look of 35 mm film with digital cameras, this is one issue of frustration - excessive depth of field with digital cameras and using additional optical devices to reduce that depth of field.

In Citizen Kane (1941), cinematographer Gregg Toland and director Orson Welles used tighter apertures to create ring every detail of the foreground and background of the sets in sharp focus. This practice is known as deep focus. Deep focus became a popular cinematographic device from the 1940s onwards in Hollywood. Today, the trend is for more shallow focus.

To change the plane of focus from one object or character to another within a shot is commonly known as a rack focus.

Aspect ratio and framing

The aspect ratio of an image is the ratio of its width to its height. This can be expressed either as a ratio of 2 integers, such as 4:3, or in a decimal format, such as 1.33:1 or simply 1.33.

Different ratios provide different aesthetic effects. Standards for aspect ratio have varied significantly over time.

During the silent era, aspect ratios varied widely, from square 1:1, all the way up to the extreme widescreen 4:1 Polyvision. However, from the 1910s, silent motion pictures generally settled on the ratio of 4:3 (1.33). The introduction of sound-on-film briefly narrowed the aspect ratio, to allow room for a sound stripe. In 1932 a new standard was introduced, the Academy ratio of 1.37, by means of thickening the frame line.

For years, mainstream cinematographers were limited to using the Academy ratio, but in the 1950s, thanks to the popularity of Cinerama, widescreen ratios were introduced in an effort to pull audiences back into the theater and away from their home television sets. These new widescreen formats provided cinematographers a wider frame within which to compose their images.

Many different proprietary photographic systems were invented and utilized in the 1950s to create widescreen movies, but one dominates film today: the anamorphic process, which optically squeezes the image to photograph twice the horizontal area to the same size vertical as standard "spherical" lenses.

The first commonly used anamorphic format was CinemaScope, which used a 2.35 aspect ratio, although it was originally 2.55. CinemaScope was used from 1953 to 1967, but due to technical flaws in the design and its ownership by Fox, several third-party companies, led by Panavision's technical improvements in the 1950s, now dominate the anamorphic cine lens market.

Changes to SMPTE projection standards altered the projected ratio from 2.35 to 2.39 in 1970, although this did not change anything regarding the photographic anamorphic standards; all changes in respect to the aspect ratio of anamorphic 35 mm photography are specific to camera or projector gate sizes, not the optical system.

After the "widescreen wars" of the 1950s, the motion-picture industry settled into 1.85 as a standard for theatrical projection in the United States and the United Kingdom. This is a cropped version of 1.37. Europe and Asia opted for 1.66 at first, although 1.85 has largely permeated these markets in recent decades. Certain "epic" or adventure movies utilized the anamorphic 2.39.

In the 1990s, with the advent of high-definition video, television engineers created the 1.78 (16:9) ratio as a mathematical compromise between the theatrical standard of 1.85 and television's 1.33, as it was not practical to produce a traditional CRT television tube with a width of 1.85. Until that point, nothing had ever been originated in 1.78. Today, this is a standard for high-definition video and for widescreen television. Some cinema films are now shot using HDTV cameras.

Lighting

Light is necessary to create an image exposure on a frame of film or on a digital target (CCD, etc.). The art of lighting for cinematography goes far beyond basic exposure, however, into the essence of visual storytelling. Lighting contributes considerably to the emotional response an audience has watching a motion picture. As once a director Sahin Michael Derun said " The difference between porn and erotica is the lighting", simply pointing out the importance of lighting in cinematography.

Camera movement

Main article: Cinematic techniques
Camera on a small motor vehicle representing a large one

Cinematography can not only depict a moving subject but can use a camera, which represents the audience's viewpoint or perspective, that moves during the course of filming. This movement plays a considerable role in the emotional language of film images and the audience's emotional reaction to the action. Techniques range from the most basic movements of panning (horizontal shift in viewpoint from a fixed position; like turning your head side-to-side) and tilting (vertical shift in viewpoint from a fixed position; like tipping your head back to look at the sky or down to look at the ground) to dollying (placing the camera on a moving platform to move it closer or farther from the subject), tracking (placing the camera on a moving platform to move it to the left or right), craning (moving the camera in a vertical position; being able to lift it off the ground as well as swing it side-to-side from a fixed base position), and combinations of the above.

Cameras have been mounted to nearly every imaginable form of transportation.

Most cameras can also be handheld, that is held in the hands of the camera operator who moves from one position to another while filming the action. Personal stabilizing platforms came into being in the late 1970s through the invention of Garrett Brown, which became known as the Steadicam. The Steadicam is a body harness and stabilization arm that connects to the camera, supporting the camera while isolating it from the operator's body movements. After the Steadicam patent expired in the early 1990s, many other companies began manufacturing their concept of the personal camera stabilizer.

Special effects

Main article: Special effect

The first special effects in the cinema were created while the film was being shot. These came to be known as "in-camera" effects. Later, optical and digital effects were developed so that editors and visual effects artists could more tightly control the process by manipulating the film in post-production.

For examples of many in-camera special effects, see the work of early filmmaker Georges Méliès.

Frame rate selection

Main article: Frame rate

Motion picture images are presented to an audience at a constant speed. In the theater it is 24 frames per second, in NTSC (US) Television it is 30 frames per second (29.97 to be exact), in PAL (Europe) television it is 25 frames per second. This speed of presentation does not vary.

However, by varying the speed at which the image is captured, various effects can be created knowing that the faster or slower recorded image will be played at a constant speed.

For instance, time-lapse photography is created by exposing an image at an extremely slow rate. If a cinematographer sets a camera to expose one frame every minute for four hours, and then that footage is projected at 24 frames per second, a four hour event will take 10 seconds to present, and one can present the events of a whole day (24 hours) in just one minute.

The inverse of this, if an image is captured at speeds above that at which they will be presented, the effect is to greatly slow down (slow motion) the image. If a cinematographer shoots a person diving into a pool at 96 frames per second, and that image is played back at 24 frames per second, the presentation will take 4 times as long as the actual event. Extreme slow motion, capturing many thousands of frames per second can present things normally invisible to the human eye, such as bullets in flight and shockwaves travelling through media, a potentially powerful cinematographical technique.

In motion pictures the manipulation of time and space is a considerable contributing factor to the narrative storytelling tools. Film editing plays a much stronger role in this manipulation, but frame rate selection in the photography of the original action is also a contributing factor to altering time. For example, Charlie Chaplin's Modern Times was shot at "silent speed" (18 fps) but projected at "sound speed" (24 fps), which makes the slapstick action appear even more frenetic.

Speed ramping, or simply "ramping", is a process whereby the capture frame rate of the camera changes over time. For example, if in the course of 10 seconds of capture, the capture frame rate is adjusted from 60 frames per second to 24 frames per second, when played back at the standard film rate of 24 frames per second, a unique time-manipulation effect is achieved. For example, someone pushing a door open and walking out into the street would appear to start off in slow-motion, but in a few seconds later within the same shot the person would appear to walk in "realtime" (normal speed). The opposite speed-ramping is done in The Matrix when Neo re-enters the Matrix for the first time to see the Oracle. As he comes out of the warehouse "load-point", the camera zooms in to Neo at normal speed but as it gets closer to Neo's face, time seems to slow down, foreshadowing the manipulation of time itself within the Matrix later in the movie.

Personnel

A camera crew from the First Motion Picture Unit

In descending order of seniority, the following staff are involved:

In the film industry, the cinematographer is responsible for the technical aspects of the images (lighting, lens choices, composition, exposure, filtration, film selection), but works closely with the director to ensure that the artistic aesthetics are supporting the director's vision of the story being told. The cinematographers are the heads of the camera, grip and lighting crew on a set, and for this reason they are often called directors of photography or DPs. In British tradition, if the DOP actually operates the camera him/herself they are called the cinematographer. On smaller productions it is common for one person to perform all these functions alone. The career progression usually involves climbing up the ladder from seconding, firsting, eventually to operating the camera.

Directors of photography make many creative and interpretive decisions during the course of their work, from pre-production to post-production, all of which affect the overall feel and look of the motion picture. Many of these decisions are similar to what a photographer needs to note when taking a picture: the cinematographer controls the film choice itself (from a range of available stocks with varying sensitivities to light and color), the selection of lens focal lengths, aperture exposure and focus. Cinematography, however, has a temporal aspect (see persistence of vision), unlike still photography, which is purely a single still image. It is also bulkier and more strenuous to deal with movie cameras, and it involves a more complex array of choices. As such a cinematographer often needs to work co-operatively with more people than does a photographer, who could frequently function as a single person. As a result, the cinematographer's job also includes personnel management and logistical organization.

Evolution of technology: new definitions

Traditionally the term "cinematography" referred to working with motion-picture film emulsion, but it is now largely synonymous with videography and digital video due to the popularity of digital cinematography.

Modern digital image processing has also made it possible to radically modify pictures from how they were originally captured. This has allowed new disciplines to encroach on some of the choices that were once the cinematographer's exclusive domain.

See also

Wikimedia Commons has media related to Cinema.

References

  1. ↑ Merriam-Webster Dictionary
  2. ↑ http://www.thefreedictionary.com/cinematography
  3. ↑ Giannetti, Louis (2008). Understanding Movies. Toronto: Pearson Prentice Hall. p. 66. 
  4. ↑ http://photoclub.canadiangeographic.ca/blogs/close-ups/archive/2008/09/12/timeline-the-evolution-of-the-camera.aspx
  5. ↑ Clegg, Brian (2007). The Man Who Stopped Time. Joseph Henry Press. ISBN 978-0-309-10112-7. 
  6. ↑ Hora, John. "Anamorphic Cinematography". In Burum, Stephen H. The American Cinematographer Manual (9 ed.). ISBN 978-0935578317. 

External links

Wikiversity has learning materials about Filmmaking
Look up cinematography in Wiktionary, the free dictionary.
Development
Pre-production
Production
Post-production
Distribution
Related
This article is issued from Wikipedia. The text is available under the Creative Commons Attribution/Share Alike; additional terms may apply for the media files.