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.
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).
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.
In optics, an aperture is a hole or an opening through which light travels.
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.
A camera is an optical instrument for recording or capturing images, which may be stored locally, transmitted to another location, or both.
The candela per square metre (cd/m2) is the derived SI unit of luminance.
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.
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.
Carl Braun Camera-Werk of Nuremberg, Germany, or Braun, as it was more commonly called, was founded as an optical production house.
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.
In dimensional analysis, a dimensionless quantity is a quantity to which no physical dimension is assigned.
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.
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.
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.
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.
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.
A foot-candle (sometimes foot candle; abbreviated fc, lm/ft2, or sometimes ft-c) is a non-SI unit of illuminance or light intensity.
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.
Victor Hasselblad AB is a Swedish manufacturer of medium-format cameras, photographic equipment and image scanners based in Gothenburg, Sweden.
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.
The horizontal coordinate system is a celestial coordinate system that uses the observer's local horizon as the fundamental plane.
In photometry, illuminance is the total luminous flux incident on a surface, per unit area.
The International Organization for Standardization (ISO) is an international standard-setting body composed of representatives from various national standards organizations.
In radiometry, irradiance is the radiant flux (power) received by a surface per unit area.
The Eastman Kodak Company (referred to simply as Kodak) is an American technology company that produces imaging products with its historic basis on photography.
A light meter is a device used to measure the amount of light.
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.
During most of the 20th century photography depended mainly upon the photochemical technology of silver halide emulsions on glass plates or roll film.
In mathematics, the logarithm is the inverse function to exponentiation.
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.
Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction.
The lux (symbol: lx) is the SI derived unit of illuminance and luminous emittance, measuring luminous flux per unit area.
is a Japanese company that manufactures high-end cameras and other related photographic and optical equipment.
In photography, the metering mode refers to the way in which a camera determines exposure.
Motion blur is the apparent streaking of moving objects in a photograph or a sequence of frames, such as a film or animation.
(or), also known just as Nikon, is a Japanese multinational corporation headquartered in Tokyo, Japan, specializing in optics and imaging products.
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.
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.
Photometry is the science of the measurement of light, in terms of its perceived brightness to the human eye.
In photography reciprocity is the inverse relationship between the intensity and duration of light that determines the reaction of light-sensitive material.
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.
The Rolleicord was a popular medium-format twin lens reflex camera made by Franke & Heidecke (Rollei) between 1933 and 1976.
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.
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.
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.
In photography, the sunny 16 rule (also known as the sunny rule) is a method of estimating correct daylight exposures without a light meter.
A transcendental function is an analytic function that does not satisfy a polynomial equation, in contrast to an algebraic function.
In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) are functions of an angle.
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.