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Exposure value

Index Exposure value

In photography, exposure value (EV) is a number that represents a combination of a camera's shutter speed and f-number, such that all combinations that yield the same exposure have the same EV (for any fixed scene luminance). [1]

49 relations: Acronym, American National Standards Institute, Aperture, APEX system, Camera, Candela per square metre, Canon Inc., Cardioid, Carl Braun Camera-Werk, Depth of field, Dimensionless quantity, Exif, Exposure (photography), Exposure compensation, F-number, Film speed, Foot-candle, Foot-lambert, Hasselblad, High-dynamic-range imaging, Horizontal coordinate system, Illuminance, International Organization for Standardization, Irradiance, Kodak, Light meter, Light value, List of abbreviations in photography, Logarithm, Loyd A. Jones, Luminance, Lux, Mamiya, Metering mode, Motion blur, Nikon, PDF, Photography, Photometry (optics), Reciprocity (photography), Rollei, Rolleicord, Rolleiflex, Second, Shutter speed, Sunny 16 rule, Transcendental function, Trigonometric functions, Voigtländer.

Acronym

An acronym is a word or name formed as an abbreviation from the initial components in a phrase or a word, usually individual letters (as in NATO or laser) and sometimes syllables (as in Benelux).

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American National Standards Institute

The American National Standards Institute (ANSI) is a private non-profit organization that oversees the development of voluntary consensus standards for products, services, processes, systems, and personnel in the United States.

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Aperture

In optics, an aperture is a hole or an opening through which light travels.

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APEX system

APEX stands for Additive system of Photographic EXposure, which was proposed in the 1960 ASA standard for monochrome film speed, ASA PH2.5-1960, as a means of simplifying exposure computation.

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Camera

A camera is an optical instrument for recording or capturing images, which may be stored locally, transmitted to another location, or both.

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Candela per square metre

The candela per square metre (cd/m2) is the derived SI unit of luminance.

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Canon Inc.

is a Japanese multinational corporation specializing in the manufacture of imaging and optical products, including cameras, camcorders, photocopiers, steppers, computer printers and medical equipment. It's headquartered in Ōta, Tokyo, Japan."." Canon. Retrieved on 13 January 2009. Canon has a primary listing on the Tokyo Stock Exchange and is a constituent of the TOPIX index. It has a secondary listing on the New York Stock Exchange.

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Cardioid

A cardioid (from the Greek καρδία "heart") is a plane curve traced by a point on the perimeter of a circle that is rolling around a fixed circle of the same radius.

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Carl Braun Camera-Werk

Carl Braun Camera-Werk of Nuremberg, Germany, or Braun, as it was more commonly called, was founded as an optical production house.

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Depth of field

In optics, particularly as it relates to film and photography, the optical phenomenon known as depth of field (DOF), is the distance about the Plane of Focus (POF) where objects appear acceptably sharp in an image.

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Dimensionless quantity

In dimensional analysis, a dimensionless quantity is a quantity to which no physical dimension is assigned.

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Exif

Exchangeable image file format (officially Exif, according to JEIDA/JEITA/CIPA specifications) is a standard that specifies the formats for images, sound, and ancillary tags used by digital cameras (including smartphones), scanners and other systems handling image and sound files recorded by digital cameras.

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Exposure (photography)

In photography, exposure is the amount of light per unit area (the image plane illuminance times the exposure time) reaching a photographic film or electronic image sensor, as determined by shutter speed, lens aperture and scene luminance.

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Exposure compensation

Exposure compensation is a technique for adjusting the exposure indicated by a photographic exposure meter, in consideration of factors that may cause the indicated exposure to result in a less-than-optimal image.

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F-number

The f-number of an optical system (such as a camera lens) is the ratio of the system's focal length to the diameter of the entrance pupil.

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Film speed

Film speed is the measure of a photographic film's sensitivity to light, determined by sensitometry and measured on various numerical scales, the most recent being the ISO system.

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Foot-candle

A foot-candle (sometimes foot candle; abbreviated fc, lm/ft2, or sometimes ft-c) is a non-SI unit of illuminance or light intensity.

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Foot-lambert

A foot-lambert or footlambert (fL, sometimes fl or ft-L) is a unit of luminance in United States customary units and some other unit systems.

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Hasselblad

Victor Hasselblad AB is a Swedish manufacturer of medium-format cameras, photographic equipment and image scanners based in Gothenburg, Sweden.

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High-dynamic-range imaging

High-dynamic-range imaging (HDRI) is a high dynamic range (HDR) technique used in imaging and photography to reproduce a greater dynamic range of luminosity than is possible with standard digital imaging or photographic techniques.

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Horizontal coordinate system

The horizontal coordinate system is a celestial coordinate system that uses the observer's local horizon as the fundamental plane.

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Illuminance

In photometry, illuminance is the total luminous flux incident on a surface, per unit area.

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International Organization for Standardization

The International Organization for Standardization (ISO) is an international standard-setting body composed of representatives from various national standards organizations.

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Irradiance

In radiometry, irradiance is the radiant flux (power) received by a surface per unit area.

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Kodak

The Eastman Kodak Company (referred to simply as Kodak) is an American technology company that produces imaging products with its historic basis on photography.

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Light meter

A light meter is a device used to measure the amount of light.

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Light value

In photography, light value has been used to refer to a “light level” for either incident or reflected light, often on a base-2 logarithmic scale.

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List of abbreviations in photography

During most of the 20th century photography depended mainly upon the photochemical technology of silver halide emulsions on glass plates or roll film.

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Logarithm

In mathematics, the logarithm is the inverse function to exponentiation.

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Loyd A. Jones

Loyd A. Jones (April 12, 1884 – May 15, 1954) was an American scientist who worked for Eastman Kodak Company, where he was head of its physics department for many years.

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Luminance

Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction.

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Lux

The lux (symbol: lx) is the SI derived unit of illuminance and luminous emittance, measuring luminous flux per unit area.

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Mamiya

is a Japanese company that manufactures high-end cameras and other related photographic and optical equipment.

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Metering mode

In photography, the metering mode refers to the way in which a camera determines exposure.

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Motion blur

Motion blur is the apparent streaking of moving objects in a photograph or a sequence of frames, such as a film or animation.

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Nikon

(or), also known just as Nikon, is a Japanese multinational corporation headquartered in Tokyo, Japan, specializing in optics and imaging products.

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PDF

The Portable Document Format (PDF) is a file format developed in the 1990s to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems.

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Photography

Photography is the science, art, application and practice of creating durable images by recording light or other electromagnetic radiation, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film.

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Photometry (optics)

Photometry is the science of the measurement of light, in terms of its perceived brightness to the human eye.

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Reciprocity (photography)

In photography reciprocity is the inverse relationship between the intensity and duration of light that determines the reaction of light-sensitive material.

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Rollei

Rollei was a German manufacturer of optical instruments founded in 1920 by and in Braunschweig, Lower Saxony, and maker of the Rolleiflex and Rolleicord series of cameras.

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Rolleicord

The Rolleicord was a popular medium-format twin lens reflex camera made by Franke & Heidecke (Rollei) between 1933 and 1976.

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Rolleiflex

Rolleiflex is the name of a long-running and diverse line of high-end cameras originally made by the German company Franke & Heidecke, and later Rollei-Werk.

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Second

The second is the SI base unit of time, commonly understood and historically defined as 1/86,400 of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each.

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Shutter speed

In photography, shutter speed or exposure time is the length of time when the film or digital sensor inside the camera is exposed to light, also when a camera's shutter is open when taking a photograph.

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Sunny 16 rule

In photography, the sunny 16 rule (also known as the sunny rule) is a method of estimating correct daylight exposures without a light meter.

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Transcendental function

A transcendental function is an analytic function that does not satisfy a polynomial equation, in contrast to an algebraic function.

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Trigonometric functions

In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) are functions of an angle.

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Voigtländer

Voigtländer was a significant long-established company within the optics and photographic industry, headquartered in Braunschweig, Germany, and today continues as a trademark for a range of photographic products.

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Redirects here:

Belichtungswert, Camera exposure, Camera exposure settings, EV (photography), Ev (photography), Exposure Value, Exposure value (photography), Lichtwert.

References

[1] https://en.wikipedia.org/wiki/Exposure_value

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