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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 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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a camera setting corresponding to a particular f-number.

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an opening, hole, or gap.

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the visual quality of the out-of-focus areas of a photographic image, especially as rendered by a particular 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 In the case of zoom lenses, both the minimum and maximum focal lengths are stated, for example 18–55 mm.

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Vibration Reduction is an image stabilization technology that minimizes blur caused by camera shake. ... Another advantage of lens-based is that a separate algorithm confirms the stabilization effect when you press the shutter release button halfway, giving you the freedom to compose your image more easily.

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A miniature representation of a page or image that is used to identify a file by its contents. Clicking the thumbnail opens the file. Thumbnails are an option in file managers, such as Windows Explorer, and they are found in photo editing and graphics program to quickly browse multiple images in a folder.

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Manual mode is one of the main settings on your camera, and it lets you manually control shutter speed, aperture, and ISO. ... The auto modes , and semi automatic modes on your camera are great places to start.

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The four main modes, sometimes abbreviated "PASM", are: P: Program mode has the camera calculate both shutter speed and aperture

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A mode which guides you through the process

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a system used in some automatic cameras in which the shutter speed is selected by the user and the appropriate aperture is then set by the camera.

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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. Nearly all digital cameras have an automatic exposure mode.