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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 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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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 (Auto, Program), and semi automatic modes (Aperture Priority, and Shutter Priority) on your camera are great places to start.

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A logic model (also known as a logical framework, theory of change, or programmatrix) is a tool used by funders, managers, and evaluators of programs to evaluate the effectiveness of a program.

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Shutter priority refers to a setting on some cameras that allows the user to choose a specific shutterspeed while the camera adjusts the aperture to ensure correct exposure.

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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.

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emitting light as a result of being heated.

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(of a substance) having or showing fluorescence.

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The most common examples of indirect sunlight are light filtered through the canopy of trees, or through thin curtains. Light can shine through leaves of plants, but also dappled sunlight due to a thin canopy or small leaves can be called indirectsunlight. Direct sunlight hits the plant full and unfiltered.

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A flash is a device used in photography producing aflash 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.

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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. ... Sometimes Most of the time overcast light is actually pretty boring and removes any and all contrast from your scene.

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Definition of shade. 1 a :comparative darkness or obscurity owing to interception of the rays of light. b :relative obscurity or retirement. 2 a :shelter (as by foliage) from the heat and glare of sunlight. b :a place sheltered from the sun.

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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 scree

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Bracketing is the process of taking three photos; one using the camera's recommended settings, one intentionally underexposed, and one intentionally overexposed. The reason is simply to be sure you can get a good exposure from a subject that's hard to meter.

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An electronic viewfinder (EVF) 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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an instrument for measuring the intensity of light, used chiefly to show the correct exposure when taking a photograph.

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A point-and-shoot camera, also known as compactcamera, 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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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'sshutter 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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This means the camera will keep taking a picture until your finger comes off the shutter button. Bulb mode is mostly used for long exposures at night. The main advantage is that it allows the photographer to achieve shutter speeds longer than the 30 seconds (displayed 30″ on the camera) that is allowed on most DSLRs.

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Motion blur is the 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 during the recording of a single exposure, either due to rapid movement or long exposure.

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a one-legged support

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Light painting, or light drawing, is a photographictechnique in which exposures are made by moving a hand-held light source while taking a long exposure photograph, either to illuminate a subject or to shine a point of light directly at the camera, or by moving the camera itself during exposure.

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a range of gray shades from white to black, as used in a monochrome display or printout.

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a reddish-brown color associated particularly with monochrome photographs of the 19th and early 20th centuries.

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The midtones are indirect light that is illuminating an object. Now that this has been established, the next thing is to begin drawing. Before that though, we need to understand where the highlights midtones, and shadows are. This can be difficult when looking at an object in color.

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an outstanding part of an event or period of time.

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a dark area or shape produced by a body coming between rays of light and a surface.