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Aperture priority, often abbreviated A or Av (for aperture value) on a camera mode dial, is a setting on some cameras that allows the user to set a specific aperture value (f-number) while the camera selects a shutter speed to match it that will result in proper exposure based on the lighting conditions

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Focal length is often printed right on the camera lens. A lens with a 100mm focal length set to an f-stop of f/10 has an aperture diameter of 10mm. Keep in mind that doubling the f-stop number halves the size of the aperture opening. ... Keep reading to find out how aperture control affects the way your pictures look.

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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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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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Metadata is stored in two main places: Internally – embedded in the image file, in formats such as JPEG or TIFF. Externally – outside the image file in a digital asset management system (DAM) or by a “sidecar” file, such as XMP, or an external XML-based news exchange format file as specified by the IPTC.

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Vibration Reduction (VR) is an image stabilization technology that minimizes blur caused by camera shake. Using a VR NIKKOR lens can result in sharp images in low light, under windy conditions or when using a physically large NIKKOR lens, at up to four stops slower with a VR lens than a non-VR lens. This number of f/stops is based on CIPA standards and will change depending upon the specific lens.

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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.

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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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white balance in digital photography means adjusting colors so that the image looks more natural.

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Something that emits light is known as a light source.