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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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an opening, hole, or gap.

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Focal Length and Angle of view. 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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In optics, particularly as it relates to film and photography, depth of field (DOF), also called focus range or effective focus range, 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 (also called a digital 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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a set of data that describes and gives information about other data.

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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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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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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 four main modes, sometimes abbreviated "PASM", are: P: Program mode has the camera calculate both shutter speed and aperture (given a manually or automatically selected ISO).

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A transverse mode of electromagnetic radiation is a particular electromagnetic field pattern of radiation measured in a plane perpendicular (i.e., transverse) to the propagation direction of the beam. Transverse modes occur in radio waves and microwaves confined to a waveguide, and also in light waves in an optical fiber and in a laser's optical resonator.

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The four main modes, sometimes abbreviated "PASM", are: P: Program mode has the camera calculate both shutter speed and aperture (given a manually or automatically selected ISO).

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

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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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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 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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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's shutter 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 monopod, sometimes called a unipod, can be a great addition to any photographer's kit. ... However, there are times when a monopod is more ideal,meaning the tripod can be left at home. The type of photographic shot one is aiming for will depend on when a monopod should be used.

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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 compensation is used to alter exposure from the value selected by the camera, making photographs brighter or darker. In modes P, S, and A, the camera automatically adjusts settings for optimal exposure, but this may not always produce the exposure the photographer intended.

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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, time-exposure, or slow-shutter photography 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 dots per inch (dpi) (see below).

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A fish eye lens is 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 fish eye lens is usually between 100 and 180 degrees while the focal lengths depend on the film format they are designed for.

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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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criticize (someone or something) severely.