Color correction in the context of Colour balance


Color correction in the context of Colour balance

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⭐ Core Definition: Color correction

Color correction is a process used in stage lighting, photography, television, cinematography, and other disciplines, which uses color gels, or filters, to alter the overall color of the light. Typically the light color is measured on a scale known as color temperature, as well as along a greenmagenta axis orthogonal to the color temperature axis.

Without color-correction gels, a scene may have a mix of various colors. Applying color-correction gels in front of light sources can alter the color of the various light sources to match. Mixed lighting can produce an undesirable aesthetic when displayed on a television or in a theatre.

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👉 Color correction in the context of Colour balance

In photography and image processing, color balance is the global adjustment of the intensities of the colors (typically red, green, and blue primary colors). An important goal of this adjustment is to render specific colors – particularly neutral colors like white or grey – correctly. Hence, the general method is sometimes called gray balance, neutral balance, or white balance. Color balance changes the overall mixture of colors in an image and is used for color correction. Generalized versions of color balance are used to correct colors other than neutrals or to deliberately change them for effect. White balance is one of the most common kinds of balancing, and is when colors are adjusted to make a white object (such as a piece of paper or a wall) appear white and not a shade of any other colour.

Image data acquired by sensors – either film or electronic image sensors – must be transformed from the acquired values to new values that are appropriate for color reproduction or display. Several aspects of the acquisition and display process make such color correction essential – including that the acquisition sensors do not match the sensors in the human eye, that the properties of the display medium must be accounted for, and that the ambient viewing conditions of the acquisition differ from the display viewing conditions.

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Color correction in the context of Blackmagic Design

Blackmagic Design Pty Ltd is an Australian company that develops digital cinema technology and manufactures professional video production hardware and software. Headquartered in South Melbourne, it is known for producing high-end digital movie cameras and a range of broadcast and post-production equipment. The company also develops software applications, including the DaVinci Resolve application for non-linear video editing, color correction, color grading, visual effects, and audio post-production.

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Color correction in the context of DaVinci Resolve

DaVinci Resolve is a proprietary application for non-linear video editing, color correction, color grading, visual effects, and audio post-production. It is developed by the Australian company Blackmagic Design for macOS, Windows, iPadOS and Linux. The software was originally created by the American company da Vinci Systems and released as da Vinci Resolve. In 2009, da Vinci Systems was acquired by Blackmagic Design, which has since continued the software's development.

DaVinci Resolve is available in two editions: a free version, and a paid version known as DaVinci Resolve Studio. The Studio edition includes support for resolutions beyond 4K (up to 32K) and frame rates up to 120 frames per second, as well as 10-bit video processing, multiple GPU acceleration, stereoscopic 3D, HDR grading, collaborative workflows, additional plug-ins and AI-driven features.

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Color correction in the context of Color grading

Color grading is a post-production process common to filmmaking and video editing of altering the appearance of an image for presentation in different environments on different devices. Various attributes of an image such as contrast, color, saturation, detail, black level, and white balance may be enhanced whether for motion pictures, videos, or still images.

Color grading and color correction are often used synonymously as terms for this process and can include the generation of artistic color effects through creative blending and compositing of different layer masks of the source image. Color grading is generally now performed in a digital process either in a controlled environment such as a color suite, and is usually done in a dim or dark environment.

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Color correction in the context of White point

A white point (often referred to as reference white or target white in technical documents) is a set of tristimulus values or chromaticity coordinates that serve to define the color "white" in image capture, encoding, or reproduction. Depending on the application, different definitions of white are needed to give acceptable results. For example, photographs taken indoors may be lit by incandescent lights, which are relatively orange compared to daylight. Defining "white" as daylight will give unacceptable results when attempting to color-correct a photograph taken with incandescent lighting.

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Color correction in the context of Goodbye to Language

Goodbye to Language (French: Adieu au Langage) is a 2014 French-Swiss narrative essay film written and directed by Jean-Luc Godard. It stars Héloïse Godet, Kamel Abdeli, Richard Chevallier, Zoé Bruneau, Jessica Erickson and Christian Grégori and was shot by cinematographer Fabrice Aragno. It is Godard's 42nd feature film and 121st film or video project, and his first to use 3D film technology. In the French-speaking parts of Switzerland where it was shot, the word "adieu" can mean both goodbye and hello. The film depicts a couple having an affair. The woman's husband discovers the affair and the lover is killed. Two pairs of actors portray the couple and their actions repeat and mirror one another. Godard's own dog Roxy Miéville has a prominent role in the film and won a prize at the Cannes Film Festival. Like many of Godard's films, it includes numerous quotes and references to previous artistic, philosophical and scientific works, most prominently those of Jacques Ellul, Aleksandr Solzhenitsyn and Mary Shelley.

Godard became interested in making a 3D film in 2010 and asked Aragno to make some camera tests. Aragno was dissatisfied with the results of professional 3D cameras and built his own custom rigs using Canon 5Ds and Flip Minos, breaking many of the standard rules for 3D cinematography. Godard and Aragno worked on the film for four years, each shooting footage independently before officially beginning production with the actors. Godard edited a 2D version of the film before he and Aragno perfected the 3D cut with color correction and surround sound.

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Color correction in the context of Da Vinci Systems

da Vinci Systems was an American digital cinema technology company based in Coral Springs, Florida. It was founded in 1984 as a spinoff of Video Tape Associates (VTA), a production and post-production facility that had begun developing in-house post-production systems in 1982. The company became known for its color correction and color grading systems, as well as digital mastering and film restoration technologies. Its products were used widely in television and film post-production.

In 1986, the company was acquired by Dynatech, following a corporate merger, Dynatech was renamed Acterna, which continued to hold da Vinci Systems. In 2005, Acterna was acquired by JDS Uniphase, which inherited da Vinci Systems as part of the transaction. In 2009, the financially troubled JDSU sold the company to Blackmagic Design, which merged it into its operations. Blackmagic Design has continued development of da Vinci's flagship software under the name DaVinci Resolve.

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Color correction in the context of Color gel

A color gel or color filter (Commonwealth spelling: colour gel or colour filter), also known as lighting gel or simply gel, is a transparent colored material that is used in theater, event production, photography, videography and cinematography to color light and for color correction. Modern gels are thin sheets of polycarbonate, polyester or other heat-resistant plastics, placed in front of a lighting fixture in the path of the beam.

Gels have a limited life, especially in saturated colors (lower light transmission) and shorter wavelength (blues). The color will fade or even melt, depending upon the energy absorption of the color, and the sheet will have to be replaced.

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