A photographic method used to obtain an image of a subject by means of its reflectance of incident ultraviolet radiation. An ultraviolet source is used to irradiate the subject, while the reflected image is recorded with a camera equipped with a...

A shutter actuated by means other than mechanical springs for timings on the order of nanoseconds. The shutter is used in...

A CCD image sensor, or charge-coupled device image sensor, is a type of electronic device used to convert optical images...

The formation of a picture or image in which the density gradients in a volume of flow are rendered visible. The image is...

An apochromat, often referred to as an apochromatic lens or apochromatic objective, is a type of optical system designed to...

Instantaneous field of view (iFOV) is a term commonly used in the context of remote sensing, imaging systems, and optical...

A factor derived by equating the incident light on the subject to the required incident light for suitable photography. The...

A camera system in which the image formed on the fluorescent screen of an image converter tube in the system is recorded by...

Chromatic aberration is an optical phenomenon that occurs when different wavelengths (colors) of light are refracted by a...

Polarization refers to the orientation of oscillations in a transverse wave, such as light waves, radio waves, or other...

A colorimeter is a device used to measure and quantify the color characteristics of an object or a light source. It provides...

In ultraviolet and fluorescence photography, the term applied to the filter used in the photographic system and with the...

The use of narrow bandpass filters and special photographic emulsions to discern features of a surface that would not be...

A type of stereoscopic photography in which a pair of lenses focuses a pair of images, relative to the positions of the two...

A high-speed, narrow-field lens consisting of two achromats spaced about the aperture stop. Its uses include portrait...

A filter designed to decrease the luminosity of the sky without decreasing that of the landscape in the foreground. A filter...

Photographic recording of rapid events at a rate exceeding 106 frames per second.

The transmission of photographic images or pictures by radio waves.

With respect to photography, the law stating that the optical density of an exposed emulsion with standard development is a...

The special cameras, film and other means for forming maps by aerial photography.

The photographing of objects within generally inaccessible areas using endoscopes with camera attachments.

The photographic recording of a subject that exhibits luminescence only for an extremely short time (10-8 s) after the...

Optics is the branch of physics that studies the behavior and properties of light, including its interactions with matter...

1. A method of photographing distant objects with a lens of long focal length. 2. The reproduction of photographs over a...

A printing process of electrostatic electrophotography that uses a photoconductive insulating medium, in conjunction with...

Also referred to as fundus photography, ophthalmoscopy is the dioptrical study of the various interior components of the eye...

Minimum object distance, often abbreviated as MOD, refers to the closest distance at which a camera lens or optical system...

Entirely analogous to color photography, but inclusive of light bands that do not appear in the visible spectrum.

The term light field refers to the spatial distribution of light rays traveling in all directions through a given space. It...

A long-pass filter is an optical filter that allows longer wavelengths of light to pass through while blocking or...

The photographic recording of objects or events in a manner that allows quantitative information to be derived from the...

Refers to the variety of techniques that use the interference pattern produced by laser light diffusely reflected by an...

The photographic recording of images on a medium sensitive to infrared radiation, using a source capable of emitting in the...

The use of photographs -- motion picture or still -- to establish if a particular event exists.

The field of photography concerned with the recording of subjects beneath the water with a watertight, water-resistant...

The process of microphotography that involves the reduction of the original at a ratio greater than 100 to 1. The process is...

the photography of very close, and typically small objects with a magnification of approximately 1:1

A short term for latent image intensification, a process much like hypersensitizing in photography, but used after exposure...

Photocells of various kinds used to measure photometric quantities; i.e., intensity, luminance and illuminance. Meter...

With respect to photography, the process used to increase the effective speed of an emulsion between manufacture and...

The application of photography, with the exception of radiography, to obtain pictures of parts or the whole of a patient to...

The use of photographs to record astronomical objects and phenomena for purposes of physical observation and measurement of...

A microlens array is a grid-like structure composed of numerous small lenses, typically arranged in a regular pattern. Each...

In photography, the layer of light-sensitive material (usually a suspension of silver halide crystals) that coats the film...

With respect to photography, the change in the density-exposure relations, for small details of the photographic image, that...

A camera designed to form a continuous record of an expansive section of the horizon. The typical panoramic camera is...

A color filter, generally used in photography, to emphasize certain color tones and to modify others in a picture for a more...

A CMOS camera refers to an imaging device that employs a complementary metal-oxide-semiconductor (CMOS) image sensor to...

The photographic recordformed in macrophotography in which the size of the small nearby object at theimage plane is the same...

The photographic recording of gas bubbles produced when particles traverse liquid hydrogen in a bubble chamber.

Holography is a technique used to capture and reconstruct three-dimensional images using the principles of interference and...

Spatial resolution refers to the level of detail or granularity in an image or a spatial dataset. It is a measure of the...

Light diffusion refers to the process by which light is scattered or spread out in various directions as it interacts with a...

In optics, the term image jump refers to a displacement or shift in the apparent position of an image when a change occurs...

With respect to color photography, the measurement, at a given wavelength, of the way the color film modulates the radiant...

Integration time, in the context of optics, imaging systems, and sensor technology, refers to the duration over which a...

In photography, the technique of taking multiple pictures of the same subject at different exposures to compensate for...

Film designed especially for the needs and conditions encountered in aerial photography. It is produced in a variety of...

A type of additive color photography using a lenticular structure impressed on a film base and a camera lens with a filter...

An optical filter is a device that selectively transmits or blocks specific wavelengths, or colors, of light. Optical...

In aerial photography, the geometric method of indicating the three-dimensional location of ground points from a pair of...

The photographing of a scene from positions corresponding to the locations of both eyes. A viewing device is used to present...

In the context of imaging, particularly digital imaging and printing, "orange peel" refers to a texture or visual distortion...

Area scan, in the context of imaging and cameras, refers to a method of capturing an entire two-dimensional image in a...

A filter used in photography to change the spectral composition of light entering a camera, or to adjust color balance...

A filter, used in photography, that absorbs the ultraviolet and extreme blue violet radiation scattered by atmospheric haze.

In photography, the density gradient across an edge separating light from darkness, a physically measurable quantity that...

The basic process of color photography whereby colors are subtracted from white light by means of filters, making all colors...

With respect to color photography, the measurement of the way the color film modulates the radiant flux in the optical...

A camera system used for microphotography that has a structure, such as a cylinder or surveyor belt, to rotate the documents...

A type of photometer calibrated in luminance units (candles per square unit, or lamberts). In photography an exposure meter...

A general-purpose lens, also known as the Celor lens, used widely in photography and commercial processing; it has the form...

The photographic recording of an image formed by the alteration in electrical properties of the sensitive materials and...

In aerial photography, the ratio derived from a stereoscopic pair of photographs that represents the air-base length divided...

A form of photography in which an electronic camera converts an image to an electronic signal that is stored in digital...

A camera lens, used in macrophotography, that is designed and corrected to produce optimum definition of a nearby object...

The application of ultraviolet, x-ray, infrared and conventional photography to law enforcement.

The term reflective is an adjective that describes the ability of a surface or material to reflect light or other forms of...

A pixel, short for "picture element," is the smallest controllable element of a digital image or display. It is a...

A printing process of electrostatic electrophotography that uses a photoconductive insulating medium, in conjunction with...

The photographic recording of an action by taking a series of still pictures at regular intervals throughout the action.

The focal length of a lens is the distance between the lens's optical center (or principal point) and the image sensor or...

A process of color photography in which colors are added one to another in the form of light, rather than as colorants, to...

The image formed in electrophotography.

Photography involving the recording of events that occur too fast to be perceived by the human eye or recorded by...

A digital camera is a device that captures and records still images or video in digital format. Unlike traditional film...

A filter, pale purple in color, used in black and white photography to display the brightness values of a subject being...

A type of stereoscopic photography in which the distance between the two view points is greater than the average...

A blur circle refers to the out-of-focus region in an image captured by an optical system. When an object in a scene is not...

A CCD camera, or charge-coupled device camera, is a type of digital camera that utilizes a CCD image sensor to capture and...

A wide-angle lens is a type of camera lens that has a shorter focal length than a standard or normal lens, allowing it to...

An electric arc that is formed in mercury vapor through which an electric current flows. The intensity of the illumination...

The methods and techniques used to obtain medical photographs of the human eye. To photograph the exterior of the eye,...

An aspheric lens is a type of lens whose surface profiles deviate from the traditional spherical shape. Unlike spherical...

Photographing of terrain on the ground and objects in the air by cameras mounted in aircraft; utilized in satellites,...

An optical diffuser is an optical component or material designed to scatter or diffuse light that passes through it. It is...

Pixel binning, also known as pixel merging or pixel combining, is a technique used in digital imaging and camera technology....

A motion-picture camera that can be advanced one frame at a time, either randomly or at set intervals. Used in animation and...

The photographic recording of visible and ultraviolet spectra on an ordinary photograph.

Aplanatic points refer to specific points in an optical system where certain aberrations, such as spherical aberration or...

Retroreflection is a phenomenon in optics where light is reflected back toward its source, typically in a direction nearly...

A graph used in photography to portray the increase of a film's density as its time of exposure increases.

An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without a human pilot onboard. UAVs are remotely...

A camera system used for microphotography in which the document to be recorded is on a flat bed, perpendicular to the lens...

An infrared light source is a device that emits light in the infrared spectrum, which lies beyond the visible spectrum of...

A term referring to various processes for forming visible images outside of a camera to be photographed on ordinary film....