Definition of light meter in the Definitions.net dictionary. Pronunciation /ˈlÄ«t ˌmēdər/ /ˈlaɪt ˌmidər/ See synonyms for light meter. In photometry, this is used as a measure of the intensity, as perceived by the human eye, of light that hits or passes through a surface. A light meter can read the ambient light in a scene, or the direct light from a light source and calculate the correct shutter speed and aperture values required to capture an accurate exposure. means a device that measures the amount of light energy falling on a given surface. light meter. light meter - photographic equipment that measures the intensity of light. * Many varieties of light meters exist, designed to do slightly different jobs and based on different properties of light. By using exposure compensation, you can tell the camera to take the metered exposure and make it brighter by a chosen amount. Reflective metering. Definition of light-meter noun in Oxford Advanced Learner's Dictionary. Pocket Series Light Meter Compact, One-Button Operation Light Meter. We use cookies to enhance your experience on our website, including to provide targeted advertising and track usage. The meter is defined to be the distance light travels through a vacuum in exactly 1/299792458 seconds. The other type of exposure meter, incident, measures light that falls directly onto the meter. By default, the camera meter looks at the light levels in the entire frame and tries to come up with an exposure that balances the bright and the dark areas of the image. An interesting effect of the definition of the meter this way is that it fixes the speed of light in a vacuum to the exact value of 299,792,458 m/s. Information and translations of light meter in the most comprehensive dictionary definitions resource on the web. light meter meaning: a device for measuring how much light there is, especially when taking a photograph. Definition agreed by the 26th CGPM (November 2018), implemented 20 May 2019: The metre, symbol m, is the SI unit of length. In photography, a light meter is often used to determine the proper exposure for a photograph. Wikipedia Dictionaries. An analogy to help you understand the light meter. Definition of Meter. Accurately Measure UVA and UVB Light UV light intensity appears on the large backlit display in either µW or mW/cm² while the small lower display simultaneously shows minimum, maximum, average and recorded data. Incident Light Meters A Histogram is not a light meter A histogram is not a light meter. A ‘light meter’ is a handheld device that used measure or ‘meter’ light. The meter is the basic unit of length in the SI system of units. Definition: Instrument designed to measure intensity of light or luminance of subject. Extech LT300. n. See exposure meter. A light meter is a device used to measure the amount of light. Whilst the two terms "light meter" and "exposure meter" are often used interchangeably, there is a difference: Light meter with double molded housing and large backlit display with 40-segment bar graph. Meter definition is - systematically arranged and measured rhythm in verse:. Easy, eh? n. See exposure meter. So, if the subject is dark, less light bounces back to the meter. It is equal to approximately 39.37 inches in the British Imperial and United States Customary systems. Essentially, meter is the basic rhythmic structure of a line within a poem or poetic work. Meaning of light meter. Did You Know? Exposure Value, or EV, varies from LV, or Light Value, depending on your film speed. An exposure meter (short form meter, commonly light meter) is an instrument that measures light and can calculate exposure settings, taking account of film or sensor sensitivity (ASA/DIN). Define light meter. This will then allow the photographer to correctly expose the person. cytophotometer - a photometer that can be used to locate and identify chemical compounds in a cell by measuring the intensity of the light that passes through stained sections of the cytoplasm. Lux meters, sometimes called light meters, measure the intensity of illumination as distinguished by the human eye. Learn more. Extech LT10. Light meter Definition from Encyclopedia Dictionaries & Glossaries. REFLECTED LIGHT METER READING VARIATIONS There are variations of light meter readings used to provide accurate light meter readings of different types of scenes.. With ISO/ASA 100 speed film you expose with an Exposure Value (EV) equal to the Light Value (LV). • For me, it is the accuracy of the Nikon light meter that really sets it apart. This value does not correlate to an objective value of energy radiated or reflected, as different wavelengths within the visible spectrum are perceived with varying sensitivity by the eye, and lux meters evaluate light intensity in consideration of this variable. EXPLORE. Light Meter Digital and Analog display of light … Up to 20 data points can be recorded automatically at a variety of … light meter synonyms, light meter pronunciation, light meter translation, English dictionary definition of light meter. How to use meter in a sentence. It is defined by taking the fixed numerical value of the speed of light in vacuum c to be 299 792 458 when expressed in the unit m s –1, where the second is defined in terms of the caesium frequency Cs. Whether it was a steak, some pork chops, or even just a couple hamburgers – you likely had a vision in your mind of what the finished product would be. noun. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. From Longman Dictionary of Contemporary English light meter ˈlight ˌmeter noun [countable] TCP an instrument used by a photographer to measure how much light there is Examples from the Corpus light meter • A light meter can be used to assess the level of lighting present. light meter in Photography topic. Before I get into a discussion about how the light meter works, think about the last time you cooked some meat on the grill. Define light meter. Definition of light meter in English: light meter. EV = LV at ISO 100. Matrix / Evaluative Metering Matrix Metering or Evaluative Metering mode is the default metering mode on most DSLRs. This application changes Jaz into a dedicated light meter allowing users to measure calibrated absolute irradiance without any need for an external computer. This is the type of meter that is used to measure flash’s intensity. The exposure meter built into your camera is a reflective light meter, meaning that it measures light reflected from a subject. Translate light meter into Spanish. The lux (symbol: lx) is the SI derived unit of illuminance, measuring luminous flux per unit area. To do this, the photographer will shield the light meter from the fill light or potentially turn off the lights that aren’t being measured at the moment. Light meter definition: → exposure meter | Meaning, pronunciation, translations and examples Metre (m), also spelled meter, in measurement, fundamental unit of length in the metric system and in the International Systems of Units (SI). The SI unit symbol is m.The metre is defined as the length of the path travelled by light in a vacuum in 1 / 299 792 458 of a second. light meter synonyms, light meter pronunciation, light meter translation, English dictionary definition of light meter. An instrument for measuring the intensity of light, used chiefly to show the correct exposure when taking a photograph. Yes, I'd like to receive Word of the Day emails from YourDictionary.com The histogram is of course affected by subject colors, how those colors reflect light.It only shows how the data result actually came out, but without any idea how it ought to be.. English Wikipedia - The Free Encyclopedia. The light meter thinks the sky is the most important part, and exposes correctly for that, leaving the person a dark silhouette. exposure meter, photometer. Meter functions as a means of imposing a specific number of syllables and emphasis when it … Define Light meter. Definition of light meter written for English Language Learners from the Merriam-Webster Learner's Dictionary with audio pronunciations, usage examples, and count/noncount noun labels. It is equal to one lumen per square metre. Your meter will do this for you, but you can do it in your head, too, if you forget your meter. EXPLORE. It is affected by the color or brightness of the subject itself. Reflected Light Meter Reflected Light Meter is a specific light meter configuration (or type) that directly measures the reflected light from a subject and provides an exposure value in f-stops or foot candles. Reflective metering measures the amount of light hitting the subject and bouncing back to the meter (which in many cases will be in your camera). By definition a good lux meter hence CANNOT see infrared or ultraviolet light, because a good lux meter only responds to visible light. Meter is a literary device that works as a structural element in poetry. The metre (Commonwealth spelling) or meter (American spelling) (from the French unit mètre, from the Greek noun μέτρον, "measure", and cognate with Sanskrit mita, meaning "measured" ) is the base unit of length in the International System of Units (SI). But you can do it in your head, too, if the subject itself and correctly. Light meters exist, designed to do slightly different jobs and based on different properties light. 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