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ISO Sensitivity. In the case of digital cameras, ISO sensitivity is a measure of the camera's ability to capture light. Digital cameras convert the light that falls on the image sensor into electrical signals for processing. ... If you raise ISO sensitivity, you can choose faster shutter speeds and reduce camera blur.

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Image noise is random variation of brightness or color information in images, and is usually an aspect of electronic noise. It can be produced by the sensor and circuitry of a scanner or digital camera. ... Image noise is an undesirable by-product of image capture that obscures the desired information.

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In photography, ASA and ISO are both measurements of film speed, or sensitivity to light. ASA is a scale created by the American Standards Association, but it is no longer widely used. Now, most film is labeled by ISO, which was created in 1987 by the International Organization for Standardization.

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Film grain or granularity is the random optical texture of processed photographic film due to the presence of small particles of a metallic silver, or dye clouds, developed from silver halide that have received enough photons. ... It can be objectionably noticeable in an over-enlarged photographic film photograph.

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An image sensor or imaging sensor (also: imager) is a sensorthat detects and conveys information used to make an image. It does so by converting the variable attenuation of light waves (as they pass through or reflect off objects) into signals, small bursts of current that convey the information.

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Automatic mode is a mode in a digital camera where the camera's software fully controls all aspects of the photograph, from the shutter speed to the aperture setting to the focus.

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The general process of shooting in manual modemight look something like this: Check the exposure of your shot with the light meter visible through your viewfinder. Pick an aperture. Adjust the shutter speed.

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Aperture priority, often abbreviated A or Av (for aperture value) on a camera modedial, is a setting on some cameras that allows the user to set a specific aperture value (f-number) while the camera selects a shutter speed to match it that will result in proper exposure based on the lighting conditions as measured by ...

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When your camera mode dial is set on AV, your camera is in Shutter Priority Mode(S is used instead of TV on Nikon and many other cameras). In TV, the user manually chooses a shutter speed setting while the camera automatically adjusts the aperture for each shot.

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Exposure Mode: Mode P (Programmed Auto) In mode P, the camera automatically adjusts shutter speed and aperture for optimal exposure. You can, however, choose other aperture and shutter speed combinations that will produce the same exposure: this is called "flexible program".

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A digital single-lens reflex camera is a digital camera that combines the optics and the mechanisms of a single-lens reflex camera with a digital imaging sensor, as opposed to photographic film. The reflex design scheme is the primary difference between a DSLR and other digital cameras.

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Metadata is "data [information] that provides information about other data"

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Thumbnails are reduced-size versions of pictures or videos, used to help in recognizing and organizing them, serving the same role for images as a normal text index does for words.

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SOOC means “straight-out-of-camera” and denotes *ZERO* computer photoshop.

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Vibration Reduction (Nikon) and Image Stabilization (Canon) is the name of a technology that helps stabilize the lens movement associated from hand shake. These stabilizers help eliminate blurry photos resulting from hand shake or if you're shutter speed is too slow.

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Autofocus points are what the camera uses to focus on a subject. You'll probably first notice them when you press the shutter halfway. Many cameras will emit a "beep," and some of the AF points will light up (often in a red or green color) in the viewfinder or on the display screen.

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In photography, bracketing is the general technique of taking several shots of the same subject using different camera settings. ... Autobracketing is automatic bracketing by using a setting on the camera to take several bracketed shots (in contrast to the photographer altering the settings by hand between each shot).

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In manual mode, the exposure level indicatormoves depending on your exposure settings. If you set your exposure settings so that the exposure level indicator is on 0, you'll take the standard exposure. ... As you make changes to shutter speed and aperture, the ISO will automatically adjust to keep the exposure at 0 EV.

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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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Burst mode, also called continuous shooting mode, sports mode or continuous high speed mode, is a shooting mode in still cameras. In burst mode, several photographs are captured in quick succession by either pressing the shutter button or holding it down.

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The f-number of an optical system is the ratio of the system's focal length to the diameter of the entrance pupil. It is a dimensionless number that is a quantitative measure of lens speed, and an important concept in photography. It is also known as the focal ratio, f-ratio, or f-stop.

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In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture and focal length of an optical system determine the cone angle of a bundle of rays that come to a focus in the image plane. An optical system typically has many openings or structures that limit the ray bundles.

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In photography, bokeh is the aesthetic quality of the blur produced in the out-of-focus parts of an image produced by a lens. Bokeh has been defined as "the way the lens renders out-of-focus points of light".

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In optics, particularly as it relates to film and photography, the optical phenomenon known as depth of field, is the distance about the plane of focus where objects appear acceptably sharp in an image.

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The focal length of an optical system is a measure of how strongly the system converges or diverges light. For an optical system in air, it is the distance over which initially collimated rays are brought to a focus.

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is the process of removing unrealistic color casts, so that objects which appear white in person are rendered white in your photo. Proper camera white balance has to take into account the "color temperature" of a light source, which refers to the relative warmth or coolness of white light.

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Light that comes more or less directly from sun: it varies very widely in brightness, colour and quality.

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out of sunlight [uncountable] slight darkness or shelter from the direct light of the sun

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Most photographers know that a cloudy or overcast day produces really soft light that can be flattering on the human face

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An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a wire filament heated to such a high temperature that it glows with visible light. The filament is protected from oxidation with a glass or fused quartz bulb that is filled with inert gas or a vacuum.

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A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow.

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A flash is a device used in photography producing a flash of artificial light (typically 1/1000 to 1/200 of a second) at a color temperature of about 5500 K to help illuminate a scene. A major purpose of a flash is to illuminate a dark scene. ... Modern cameras often activate flash units automatically.

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Using a Custom White Balance for Astrophotography. White balancing means adjusting the color balance in an image to compensate for the color temperature of the illumination source. This can be done automatically in the camera, or manually in subsequent image processing.

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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. The amount of light that reaches the film or image sensor is proportional to the exposure time.

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The Bulb setting on camera shutters is a momentary-action mode that holds shutters open for as long as a photographer depresses the shutter-release button.

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Motion blur is the apparent streaking of moving objects in a photograph or a sequence of frames, such as a film or animation. It results when the image being recorded changes during the recording of a single exposure, due to rapid movement or long exposure.

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Tripod: a three-legged stand for supporting a camera or other apparatus.

Monopod: a one-legged support for a camera or fishing rod.

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Camera shake is a term used to define the act of accidentally shaking a cameraduring shooting due to unsteady hands, which results in blurry images. This generally occurs more often if you're shooting on a low shutter speed or with a heavy lens, and can be avoided by using a tripod and cable release setup.

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When talking about photography the term ‘shadow’ is used to describe the darkest parts of an image. Shadow is often rendered in black tonal values but when exposed correctly is still able to contain large amounts of detail

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Midtones represent the surface area between the Highlights and the Shadows and they represent an area of surface that simply has less light than the Highlights.

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A highlight is a bright spot in a photograph. Normally it is assumed to be one of the brightest points in the image. Highlights are normally created by a bright or intense illumination or by various forms of diffusion or reflection. Highlights are created by any bright light source.

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Sepia toners are chemicals that work to convert the traditional metallic silver in the print to a sulfide-based compound, which can be applied in varying degrees of intensity depending on how “warm” the desired effect of sepia is.

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Post-processing may refer to: Image editing in photography. Audio editing software in audio. Differential GPS post-processing, an enhancement to GPS systems that improves accuracy. Video post-processing, methods used in video processing and 3D graphics.

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Long-exposure, time-exposure, or slow-shutter photography involves using a long-duration shutter speed to sharply capture the stationary elements of images while blurring, smearing, or obscuring the moving elements.

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Time-lapse photography is a technique whereby the frequency at which film frames are captured is much more spread out than the frequency used to view the sequence. When played at normal speed, time appears to be moving faster and thus lapsing.

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Light painting, painting with light, light drawing, or light art performance photography are terms that describe photographic techniques of moving a lightsource while taking a long exposure photograph, either to illuminate a subject or space, or to shine light at the camera to 'draw', or by moving the camera itself

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to photograph or televise while rotating a camera on its vertical or horizontal axis in order to keep a moving person or object in view or allow the film to record a panorama: to pan from one end of the playing field to the other during the opening of the football game.

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Understanding Digital Camera Resolution. The term "Resolution", when used to describe a digital camera refers to the size of the digital image the cameraproduces, and is usually expressed in terms of "megapixels" or how many million pixels it can record in a single image.