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In automatic mode the cameras will make all the decisions for you, including the aperture setting, the shutter speed, white balance and ISO.

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Manual mode on a camera allows the photographer to determine the exposure of an image by letting them select an aperture value and a shutter speed value.

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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

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In TV, the user manually chooses a shutter speed setting while the camera automatically adjusts the aperture for each shot.

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The "program" in Program mode refers to the fact that you can fiddle with the shutter speed and aperture combo.

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In Digital Photography ISO measures the sensitivity of the image sensor. The same principles apply as in film photography – the lower the number the less sensitive your camera is to light and the finer the grain.

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the commonly-used term to describe visual distortion. It looks similar to grain found in film photographs

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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.

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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.

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An image sensor is an electronic device that converts an optical image into an electronic signal. It is used in digital cameras and imaging devices to convert the light received on the camera or imaging device lens into a digital image.

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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.

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a set of data that describes and gives 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.

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In photography, bracketing is the general technique of taking several shots of the same subject using different camera settings.

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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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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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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.

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aesthetic quality of the blur produced in the out-of-focus parts of an image produced by a lens.

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the distance between the nearest and the furthest objects that give an image judged to be in focus in a camera.

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The focal length of the lens is the distance between the lens and the image sensor when the subject is in focus, usually stated in millimeters (e.g., 28 mm, 50 mm, or 100 mm). In the case of zoom lenses, both the minimum and maximum focal lengths are stated, for example 18–55 mm.

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A simple failsafe mode for snapshots, but the White Balance may vary from one shot to the next, and you may not get the colors you expect.

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Camera balances for sun by adding a lot of warmth.

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This is designed for open shade under a blue sky. This preset will give you more natural-looking skin tones.

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Light has a cooler tone under a cloudy sky, and this preset will warm up the colors. It's good for portraits but can be too much for landscapes.

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Camera balances for a light bulb by adding cool tones.

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camera balances fo fluorescent light by adding red tones.

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Camera balances for flash by adding a lot of warmth.

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The photographer sets the white balance using a white card.

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shutter speed or exposure time is the length of time when the film or digital sensor inside the camera is exposed to light

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momentary-action mode that holds shutters open for as long as a photographer depresses the shutter-release button.

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

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the act of accidentally shaking a cameraduring shooting due to unsteady hands, which results in blurry images.

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A shadow is a dark area where light from a light source is blocked by an opaque object.

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The Highlights contain the brightest tones, the Shadows contain the darkest, and the midtones contain everything in between.

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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.

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a tone added to a black and white photograph in the darkroom to “warm” up the tones

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Image editing in photography

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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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denoting the photographic technique of taking a sequence of frames at set intervals to record changes that take place slowly over time.

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photographic techniques of moving a light source 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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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

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Digital cameras are identiﬁed based on their resolution, which is measured in megapixels. This term is simply a measure of how many millions of pixels the camera's image sensor captures to produce the digital image