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often abbreviated A or Av, on a camera mode dial, is a setting on some cameras that allows the user to set a specificaperture 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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The f-number of an optical system such as a camera lens 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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The aperture stop of a photographic lens can be adjusted to control the amount of light reaching the film or image sensor. In combination with variation of shutter speed, the aperture size will regulate the film's or image sensor's degree of exposure to light.

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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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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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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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A digital single-lens reflex camera (also called adigital SLR or DSLR) 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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Definition, Types, and Relevance. Metadata is a set of data that describes and gives information about other data. Photo metadata allows information to be transported with an image file, in a way that can be understood by other software, hardware, and end users, regardless of the format.

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Both Vibration Reduction (Nikon) and Image Stabilization (Canon) is a technology that helps stabilize the lens movement associated from hand shake which helps eliminate blurry photos resulting from hand shake or too slow of a shutter speed.

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Thumbnail is a term used by graphic designers and photographers for a small image representation of a larger image, usually intended to make it easier and faster to look at or manage a group of larger images.

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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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The "program" in Program mode refers to the fact that you can fiddle with the shutter speed and aperture combo. No matter whether you choose Auto or Program, the camera chooses an aperture and shutter speed combination that will give you a good exposure.

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This setting uses exposure compensation to take an underexposed image and is used for taking photos of darker objects. Reduce Blur. This mode is best used in low-light situations where you may not have a tripod and you want to reduce camera shake by increasing ISO to allow for a faster shutter speed.

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Shutter priority refers to a setting on some cameras that allows the user to choose a specific shutter speed 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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this is where the camera makes a best guess on a shot by shot basis. You’ll find it works in many situations but it’s worth venturing out of it for trickier lighting.

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this mode is usually symbolized with a little bulb and is for shooting indoors, especially under tungsten (incandescent) lighting (such as bulb lighting). It generally cools down the colors in photos.

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this compensates for the ‘cool’ light of fluorescent light and will warm up your shots.

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not all cameras have this setting because it sets things as fairly ‘normal’ white balance settings.

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the flash of a camera can be quite a cool light so in Flash WB mode you’ll find it warms up your shots a touch.

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this setting generally warms things up a touch more than ‘daylight’ mode.

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the light in shade is generally cooler (bluer) than shooting in direct sunlight so this mode will warm things up a little.

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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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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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A light meter is 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, given a certain lighting situation and film speed.

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

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1. the time for which a shutter is open at a given setting.

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is 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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tripod - a three-legged stand for supporting a camera or other apparatus
monopod -

1. a one-legged support for a camera or fishing rod.

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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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Light painting, or light drawing, is a photographic technique 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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The exposure triangle is 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, an adjustment of one requiring adjustments of at least one of the others

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exposure of a photograph: aperture, shutter speed, and ISO. One must balance all three of these to achieve a desired result, an adjustment of one requiring adjustments of at least one of the others.

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In burst mode, 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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Time-lapse photography is a technique whereby the frequency at which film frames are captured (the frame rate) is much lower than that used to view the sequence. When played at normal speed, time appears to be moving faster and thus lapsing

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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 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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Camera resolution is measured in megapixels(meaning millions of pixels); both image ﬁle resolution and monitor resolution are measured in either pixels per inch (ppi) or pixel dimensions (such as 1024 by 768 pixels); and printer resolution is measured in dotsper inch (dpi)

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A fisheye lens is an ultra wide-angle lens that produces strong visual distortion intended to create a wide panoramic or hemispherical image. Fisheye lenses achieve extremely wide angles of view.

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

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panned, panning. 1. tophotograph 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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In photography, computing, and colorimetry, agrayscale or greyscale 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. ... Grayscale images have many shades of gray in between.

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a dark reddish-brown pigment obtained from the inky secretion of the cuttlefish. 2. any cuttlefish of the genus Sepia. 3. a brownish tone imparted to a photograph, esp an early one such as a calotype.

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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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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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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. The cross section of a shadow is a two-dimensional silhouette, or a reverse projection of the object blocking the light.