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An exposure system used in some automatic cameras in which the aperture is selected by the user and the appropriate shutter speed is controlled automatically.

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The f-stop of a lens is determined by dividing the focal length of the lens by the diameter of the size of entrance pupil, i.e., the lens opening.

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A space through which light passes in an optical or photographic instrument, especially the variable opening by which light enters a camera.

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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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The point in space where parallel light rays meet after passing through the lens or bouncing off the mirror. A "perfect" lens or mirror would send all light rays through one focal point, which would result in the clearest image.

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Lets you manually control shutter speed, aperture, and ISO.

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Program mode has the camera calculate both shutter speed and aperture. (given a manually or automatically selected ISO)

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Walks you through shutter speed, aperture and ISO.

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Allows the user to choose a specific shutter speed while the camera adjusts the aperture to ensure correct exposure.

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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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With this setting the camera will decide what the correct white balance is for the scene it sees through the lens. It will adjust the white balance for each picture you take, so you may not have consistent color.

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The old standard incandescent light bulb gets hot and uses too much energy. If you are shooting under incandescent light, your images may be objectionably warm, with orange skin tones and whites that are not white.

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Fluorescent light has a deficit of blue, so your subjects will come out looking greenish. If you take pictures of people under fluorescent light and they look a sickly green or yellow, set your camera to the fluorescent white balance setting and shoot again.

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When you are shooting outside under direct sunlight, the color is somewhat neutral and tends to be warm. Using this setting will balance your camera for shooting under direct sunlight.

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When you use a flash unit, whether it’s a popup unit built into your camera or an external unit mounted on your camera, you can set the white balance to flash and the camera will record consistent color for most flash units.

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On a cloudy or overcast day the light has a blue tint that can make images seem cool. When you set the camera to cloudy white balance, it adds red (warmth) to the image so it looks more natural. You can also use the cloudy setting when you want to warm up any of your images.

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Light in the shade is very blue, primarily because the warm light of the sun is not shining on the subject. If you set the camera to shady white balance, it will add a lot of warmth to the image.

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Is the distance between the nearest and farthest objects in a scene that appear acceptably sharp in an 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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An image stabilization technology that minimizes blur caused by camera shake.

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A very small or concise description, representation, or summary.

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Are what the camera uses to focus on a subject. Many cameras will emit a "beep," and some of the AF points will light up in the viewfinder or on the display screen.

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eneral technique of taking several shots of the same subject using different camera settings.

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An electronic viewfinder is a camera viewfinder where the image captured by the lens is projected electronically onto a miniature display. The image on this display is used to assist in aiming the camera at the scene to be photographed.

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A device used to measure the amount of light.Typically a light meter will include either digital or analog electronic circuit, which allows the photographer to determine which shutter speed and f-number should be selected for an optimum exposure.

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Also known as compact camera, is a still camera designed primarily for simple operation. Most use focus free lenses or autofocus for focusing, automatic systems for setting the exposure options, and have flash units built in. None have lens threads.

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The time for which a shutter is open at a given setting. How long the camera captures light.

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An exposure setting that is used when seeking to use a shutter speed of more than 30 seconds. Generally, this would be used in extremely low light situations, such as taking photos of the night sky.

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A common way of associating the three variables that determine the exposure of a photograph: aperture, shutter speed, and ISO. One must balance all three of these to achieve a desired result

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It's a way to force the camera to make your photos darker or brighter to the degree that you tell it.

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Several photographs are captured in quick succession by either pressing the shutter button or holding it down. This is used mainly when the subject is in successive motion, such as sports photography.

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Taking a sequence of frames at set intervals to record changes that take place slowly over time. When the frames are shown at normal speed, or in quick succession, the action seems much faster.

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Image editing in photography.

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Apparent streaking of rapidly moving objects in a still image or a sequence of images such as a movie or animation. It results when the image being recorded changes either due to rapid movement or long exposure.

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A monopod is a single pole that is used to support a camera. A tripod is a three-legged frame that is used to stabilize a camera.

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Technique in which exposures are made by moving a hand-held light source while taking a long exposure photograph

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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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Image resolution is the detail animage holds. Higher resolution means more image detail. Image resolution can be measured in various ways

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An ultra wide-angle lens that produces strong visual distortion intended to create a wide panoramic or hemispherical image. The angle of view of a fisheye lens is usually between 100 and 180 degrees

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Unintentional slight movement of a camera during photography or filming, liable to cause blurring of the image.

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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

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A grayscale  image is one in which the value of each pixel is a single sample representing only an amount of light, that is, it carries only intensity information, making it black and white.

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A brownish tone imparted to a photograph, esp an early one such as a calotype.

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That range of tones which lie between highlights with detail and shadows with detail.

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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 shadow is a dark area where light from a light source is blocked by an opaque object. It occupies all of the three-dimensional volume behind an object with light in front of it.