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Measure of illuminance for a combination of a camera's shutter speed and f-number
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
Exposure_value
Amount of light captured by a camera
from exposure value (EV) and scene luminance in a specified region. An "exposure" is a single shutter cycle. For example, a long exposure refers to a single
Exposure_(photography)
extending the concept of exposure value to all exposure parameters. Taking base-2 logarithms of both sides of the exposure equation and separating numerators
APEX_system
Length of time when the film or digital sensor inside a camera is exposed to light
determine the amount of light that reaches the film or sensor (the exposure). Exposure value (EV) is a quantity that accounts for the shutter speed and the
Shutter_speed
Superimposition of two or more exposures to create a single image
exposure has a corresponding meaning in respect of two images. The exposure values may or may not be identical to each other. Ordinarily, cameras have
Multiple_exposure
Photographic technique
an exposure compensation range of ±2 EV is often sufficient for using the Zone System with color film and digital sensors. Exposure value Exposure index
Exposure_compensation
Method of estimating exposure in photography
mnemonic for the camera settings obtained on a sunny day using the exposure value (EV) system. The basic rule is, "On a sunny day set aperture to f/16
Sunny_16_rule
German photographic company
now out of production. F. Deckel developed the exposure value (EV) scale, also known as the Light Value Scale, which is a single number that measures scene
Friedrich_Deckel
An Exposure Action Value (EAV) or Action Value (AV) is a limit set on occupational exposure to noise where, when those values are exceeded, employers must
Exposure_action_value
Photography using a long-duration shutter speed
Long-exposure, time-exposure, or slow-shutter photography involves using a long-duration shutter speed to sharply capture the stationary elements of images
Long-exposure_photography
Light-measuring instrument
selenium. The most common use of such light meters is measuring the exposure value for photography. The electric part of such a meter is an electromagnetic
Selenium_meter
Topics referred to by the same term
photographic film Exposure value, a value given to all combinations of camera shutter speed and aperture that gives the same exposure Exposure (American TV
Exposure
Public indecency involving nudity
1980s. Moral values changed drastically during the 1990s and 2000s, which in turn changed the criteria for indecent exposure. Public exposure of the navel
Indecent_exposure
Technique to capture HDR images and videos
tonal values that can be captured in a single image is known as the dynamic range. In photography, dynamic range is measured in exposure value (EV) differences
Multi-exposure_HDR_capture
standard, and has had several different meanings: An arbitrary value indicated by an exposure meter such as the Weston Master V, discussed in Adams (1948
Light_value
expectancy\ (SLE)}={Asset\ value\ (AV)\ }\times {\ Exposure\ factor\ (EF)}} The exposure factor is usually a subjective value that the person assessing
Exposure_factor
Optical device for recording images
possible. Like aperture settings, exposure times increment in powers of two. The two settings determine the exposure value (EV), a measure of how much light
Camera
Darkening an image's periphery versus the center
(the shortest focal length). In these cases, vignetting may cause an exposure value (EV) difference of up to 3EV. There are several causes of vignetting
Vignetting
Photographic technique
finished photograph. In this case the exposure compensation (EV value) setting remains constant while bracketing the ISO value in Av, TV, or P mode, which will
Bracketing
Subtractive color model used in printing
Color management Technicolor Mixam Print Support: CMYK colour charts and values. [1] Kang, Henry R. (1999). Digital Color Halftoning. SPIE Press. p. 1.
CMYK_color_model
Aesthetic quality of blur in the out-of-focus parts of an image
Retrieved 2009-10-30. Harold Davis (2008). Practical Artistry: Light & Exposure for Digital Photographers. O'Reilly Media. p. 62. ISBN 978-0-596-52988-8
Bokeh
Art photography using erotica, and sexually suggestive appeals
direction of the "obscene", and is judged as lacking in artistic or aesthetic value; however, the line between art and pornography has been both socially and
Erotic_photography
Phase of producing a film or television show in which the bulk of shooting takes place
outdoors as much as possible, as sunlight was needed to ensure adequate exposure of poor-quality early film stock; nowadays, due to the increased use of
Principal_photography
Camera model
photography parameters including exposure and ISO and battery level, and an additional mode dial-like knob for exposure value, and 3.5mm headphone connector
Sony_Cyber-shot_DSC-RX10
Filming technique
bracketing for each frame. Three photographs are taken at separate exposure values (capturing the three in immediate succession) to produce a group of
Time-lapse_photography
Photographic technique
Evaluating a scene is particularly easy with a meter that indicates in exposure value (EV), because a change of one EV (e.g. one f-stop) is equal to a change
Zone_System
Inverse relationship between the intensity and duration
meter indicates a required exposure value of 5 and the photographer sets the aperture to f/11, then ordinarily a 4-second exposure would be required; a reciprocity
Reciprocity_(photography)
Image created by light falling on a light-sensitive surface
was not sensitive enough to be practical for that application: a camera exposure lasting for hours or days was required. In 1829, Niépce entered into a
Photograph
Measure of lens speed
meaning a factor of one-half. The one-stop unit is also known as the EV (exposure value) unit. On a camera, the aperture setting is traditionally adjusted in
F-number
Topics referred to by the same term
an occlusive. Stop, the difference of a power of 2 in the context of exposure value F-stops, a unit of measure of aperture Stop bath, a chemical used in
Stop
Asset value (AV) × Exposure factor (EF) , {\displaystyle {\text{Single-loss expectancy (SLE)}}={\text{Asset value (AV)}}\times {\text{Exposure factor
Single-loss_expectancy
Photographic lens
exposure time = 1/8000 s, exposure value = 12.5. Wheat field in strong wind with bokeh, ISO speed = 200, exposure time = 1/4000 s, exposure value = 11
Nocticron
Room which can be made fully dark to allow for development of photographs and film
completely light proof and used to prepare film prior to exposure or developing. During exposure, values in the image can be adjusted, most often by "dodging"
Darkroom
Art and practice of creating images by recording light
real image on the light-sensitive surface inside a camera during a timed exposure. With an electronic image sensor, this produces an electrical charge at
Photography
contain a reliable estimate of the employees exposure and compare the exposure with the exposure limits and values identify what is needed to comply with the
Control of Noise at Work Regulations 2005
Control_of_Noise_at_Work_Regulations_2005
Topics referred to by the same term
data through radio signals Expected value, the mean of a random variable's probability distribution Exposure value, a combination of shutter speed and
EV
Camera model
LED exposure meter. This system indicated the selected shutter speed with a blinking LED and the suggested shutter speed, based on the exposure value and
Minolta_X-570
Swivelling a camera horizontally from a fixed position
subject in the same position in the frame for the duration of the exposure. The exposure time must be long enough to allow the background to blur due to
Panning_(camera)
Smallest addressable element of a raster image
regular two-dimensional grid, with each pixel storing one or more numerical values that represent a sample of an image. A greater sampling density can represent
Pixel
Topics referred to by the same term
vibrations and may refer to: Sound exposure level, measure of the sound exposure of a sound relative to a reference value Sound power level, measure of the
Sound_level
Topics referred to by the same term
EV100 may refer to: The EV-100 serotype of the enterovirus EV100 - exposure value for ISO 100 film speed EV100 - an electric car produced by the Chinese
EV100
Digital camera model
tracking and micro adjustment AF with focus lock. 1200 Zone exposure metering. -2 to 17 exposure value metering sensitivity range (ISO 100 equivalent with F1
Sony_Alpha_65
Film camera
uncoupled meter gives light readings in exposure values within the viewfinder which is then translated to exposure settings around the lens of the camera
Olympus_35SP
Early photographic technique
various lithographic processes. The asphalt process or heliography required exposures that were so long that Arago said it was not fit for use. Nevertheless
Daguerreotype
Way in which a camera determines exposure
photography, the metering mode refers to the way in which a camera determines exposure. Cameras generally allow the user to select between spot, center-weighted
Metering_mode
the second is the discovery that some substances are visibly altered by exposure to light. There are no artifacts or descriptions that indicate any attempt
History_of_photography
Type of camera
and shorter exposure time. Moving the film farther away from the pinhole will result in a telephoto or narrow-angle view and longer exposure time. Instead
Pinhole_camera
Techniques used to reduce blurring of images
associated with the motion of a camera or other imaging device during exposure. Generally, it compensates for pan and tilt (angular movement, equivalent
Image_stabilization
Hazardous substance exposure threshold
The threshold limit value (TLV) is a level of occupational exposure to a hazardous substance where it is believed that nearly all healthy workers can
Threshold_limit_value
Photographic tone reversal due to overexposure
"shot", meaning no pauses or double exposures. The exposure to achieve Solarization can be increased by exposure time or by increasing the light intensity
Solarization_(photography)
Digital single-lens reflex camera
low light scenes, with the effect of its light sensitivity being one exposure value better (-3 EV) than the D7100 (-2 EV). -3 EV allows for autofocusing
Nikon_D7200
Mobile phone with photographic capability
High dynamic range imaging merges multiple images with different exposure values for a balanced brightness across the image and was first implemented
Camera_phone
Measure of image quality
speed latitude ratings, standard output sensitivity values, and recommended exposure index values for digital still cameras. ISO 12232:2006 is applicable
Signal-to-noise ratio (imaging)
Signal-to-noise_ratio_(imaging)
Financial instrument used to calculate value
The notional amount (or notional principal amount or notional value) on a financial instrument is the nominal or face amount that is used to calculate
Notional_amount
Color film developing process
half with C-41, but it is very sensitive to development bath time. After exposure, the film is developed in a "color developer". The developing ingredient
C-41_process
Standard that defines a specific range of colors
is with an HSL or HSV color model, based on hue, saturation, brightness (value/lightness). With such a model, the variables are assigned to cylindrical
Color_space
United Kingdom health and safety legislation
identify whether the 'exposure action value' or the 'exposure limit value' is likely to be exceeded. The 'exposure action value' is the daily level, after
Control of Vibration at Work Regulations 2005
Control_of_Vibration_at_Work_Regulations_2005
Hole or opening through which light travels
sensitivity for the correct exposure. This is also referred to as Aperture Priority Auto Exposure, A mode, AV mode (aperture-value mode), or semi-auto mode
Aperture
Perception caused by wavelengths of light
musical notes that could form part of a scale, such as an octave. After exposure to strong light in their sensitivity range, photoreceptors of a given type
Color
Upper limit on the acceptable concentration of a hazardous substance
limit value, set by the European Union Threshold limit value, set by the American Conference of Governmental Industrial Hygienists Occupational exposure banding
Occupational_exposure_limit
Banking valuation adjustments
and the risk neutral value is to be adjusted correspondingly. When a derivative's exposure is collateralized, the "fair-value" is computed as before
XVA
Color model based on red, green and blue
device-dependent color model: different devices detect or reproduce a given RGB value differently, since the color elements (such as phosphors or dyes) and their
RGB_color_model
Topics referred to by the same term
European Voluntary Service EVS Broadcast Equipment, a Belgian company Exposure Value Scale, a photography technique Ethan Van Sciver, an American comic artist
EVS
2013 mobile operating system
without locked focus/exposure, the exposure value can be adjusted by swiping up or down. In case AE/AF lock is activated, the exposure will be fixed indefinitely
IOS_7
Photographic printing process that produces a blue print
blue. The exposure time varies widely, from a few seconds in strong direct sunlight, to 10–20 minute exposures on a dull day. After exposure, the paper
Cyanotype
Camera feature of combining shots
typically for one specific parameter: Exposure autobracketing (often abbreviated to AEB for automatic exposure bracketing or BR for Bracketing) is the
Autobracketing
Treatment method for anxiety disorders
Exposure therapy is a technique in behavior therapy to treat anxiety disorders. Exposure therapy involves exposing the patient to the anxiety source or
Exposure_therapy
Image on photographic film
enough for ordinary picture-taking are darkened, rather than bleached, by exposure to light and subsequent photographic processing. In the case of color negatives
Negative_(photography)
Photographic technique
corridor, Exposure time of 1.3 sec on a 34 mm 18-55 lens Costumed person during Martinique carnival, Exposure time: 1/20 sec Nightly skyscraper, Exposure time:
Zoom_burst
Early color photography method
emulsion in contact with a mirror (originally liquid mercury) during the exposure to introduce interference, chemically developing the plate, inverting the
Lippmann_plate
Failure of a lens to focus all colors on the same point
single color channel to black and white. This will, however, require longer exposure (and change the resulting image). (This is only true with panchromatic
Chromatic_aberration
Measure of how strongly an optical system converges or diverges light
length is the inverse of the optical power of an optical system, and is the value used to calculate the magnification of the system. The imaging properties
Focal_length
Photoflash exposure setting measurement
When setting photoflash exposures, the guide number (GN) of photoflash devices (flashbulbs and electronic devices known as "studio strobes", "on-camera
Guide_number
Film developing technique
under lighting conditions that would ordinarily be too low for adequate exposure at the required shutter speed and aperture combination. This technique
Push_processing
Camera and smartphone benchmarking website
sub-scores for Exposure, Colour, Focus, Texture, Noise, Artifacts, Flash, and Bokeh. For DXOMARK Selfie Video, sub-scores include Exposure, Colour, Focus
DxOMark
Chemical effect
film stock. Film printed in this way usually have reduced saturation and exposure latitude, along with increased contrast and more prominent grain. It usually
Bleach_bypass
Type of camera whose film self-develops a short time after the picture is taken
out some of the user's responsibility and made it easier to use. Each exposure developed automatically once the shot was taken. SX-70 (or Time Zero[vague])
Instant_camera
Chromogenic photographic process
conventional six bath and hobbyist three bath processes. E-6 film structure and exposure The structure of E-6 film has three separate light-sensitive layers; each
E-6_process
Potential loss due to a failed bank loan
to be applied to each exposure. A bank using internal EAD estimates for capital purposes might be able to differentiate EAD values on the basis of a wider
Exposure_at_default
Photographic process
than the end product. The progress of the print can be checked during the exposure, as it is a printing-out process, and the image can be seen taking form
Albumen_print
in air. Sound exposure level (SEL) is a logarithmic measure of the sound exposure of a sound relative to a reference value. Sound exposure level, denoted
Sound_exposure
SI derived unit of illuminance
P or F for luminous flux, and ρ for luminous efficacy of a source. Exposure value International Bureau of Weights and Measures (2019-05-20), The International
Lux
Camera technique
lens down to the working aperture during exposure, and returns the lens to maximum aperture after exposure. For perspective-control and tilt–shift lenses
Tilt–shift_photography
Type of photography aimed at expressing the personality of the human subject(s)
these early works reflected the technical challenges associated with long exposure times and the painterly aesthetic of the time. Hidden mother photography
Portrait_photography
Luminous flux incident on a surface per area
{\displaystyle L_{\mathrm {v} }={\frac {E_{\mathrm {v} }R}{\pi }}} Irradiance Exposure value Luminance "Illuminance, 17-21-060". CIE S 017:2020 ILV: International
Illuminance
Photographic image produced directly from film
preserves all the detail that is present in the negative. However, the exposure value (EV) range, the variation from darkest to lightest regions, is inherently
Contact_print
Occupational Exposure Limit Values (SCOEL) is a committee of the European Commission established in 1995 to advise on occupational exposure limits for chemicals
Scientific Committee on Occupational Exposure Limit Values
Scientific_Committee_on_Occupational_Exposure_Limit_Values
Optical device used with a camera to create images
by a smaller f-number, allows using a faster shutter speed for the same exposure. The camera equation, or G#, is the ratio of the radiance reaching the
Camera_lens
Adverse effects of a substance that result either from a single exposure
experience no adverse health effects. Short-Term Exposure Limit, STEL or Threshold limit value-short-term exposure limit, TLV-STEL: The concentration which no
Acute_toxicity
Photography genre
Nature photography tends to place a stronger emphasis on the aesthetic value of the photo than other photography genres, such as photojournalism and
Nature_photography
Device that converts images into electronic signals
It is because in a given integration (exposure) time, more photons hit the pixel with larger area. Exposure time of image sensors is generally controlled
Image_sensor
Thickness affecting radiation
of air kerma, exposure, or exposure rate can be used to determine half value layer, as long as it is given in the description. Half-value layer refers
Half-value_layer
First permanent photographic process
that the acid-resistant Bitumen of Judea used in etching hardened with exposure to light. In experiments he coated it on plates of glass, zinc, copper
Heliography
Photographic printmaking process
gelatin in proportion to the amount of light that reaches the paper. After exposure, the print is soaked in water and the non-hardened areas absorb more water
Oil_print_process
1981 studio album by Phil Collins
Face Value is the debut studio album by the English drummer and singer-songwriter Phil Collins, released on 13 February 1981, by Virgin Records in the
Face_Value_(album)
Camera that typically uses a mirror and prism system
market cost. 35 mm film comes in a variety of exposure lengths: 20 exposure, 24 exposure and 36 exposure rolls. Medium format SLRs provide a higher-quality
Single-lens_reflex_camera
35mm SLR camera
to 1/1000 sec. in 1/3 light value steps. A f/1.8 lens would have full light strength in the viewfinder, but at exposure the max. aperture would be f/2
Konica_FP-1
Early colour photography process
loss due to all the filtering, Autochrome plates required much longer exposures than black-and-white plates and films, which meant that a tripod or other
Autochrome_Lumière
Topic of debate in Photography
cameras apply noise reduction to long-exposure photographs to counteract noise due to pixel leakage. For very long exposures, the image sensor must be operated
Comparison of digital and film photography
Comparison_of_digital_and_film_photography
Measure of a photographic film's sensitivity to light
exist, the new ASA exposure-index value will cause but a slight increase in exposure. However […] a comparison of the new ASA exposure-index numbers and
Film_speed
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