Digital Cameras Glossary
Technology / Digital Cameras Glossary
Digital Zoom: The ability to magnify an optical image digitally, using interpolation. Digital cameras can come with quite high levels of digital zoom, but the image quality suffers noticeably as more digi . . . View Full Definition
Diopter Adjustment: Adapts the viewfinder to your vision so you see the subject in sharp focus.
Dodging: Selectively lightening part of a photo with an image editing program.
Dots Per Inch (DPI): A measurement of the resolution of a digital photo or digital device, including digital cameras and printers. The higher the number, the greater the resolution.
Download: The process of moving computer data from one location to another. Though the term is normally used to describe the transfer, or downloading, of data from the Internet, it is also used to des . . . View Full Definition
Echangeable Image File (EXIF): The file format used by most digital cameras. For example, when a typical camera is set to record a JPEG, it's actually recording an EXIF file that uses JPEG compression to compress the phot . . . View Full Definition
Effective Pixel Count: There are two different ways to think about the pixels on a camera's image sensor. 'Actual' pixels is a simple count of every pixel present on the sensor. 'Effective' pixels, however, is a c . . . View Full Definition
Effective Pixels: This is the number of pixels of the CCD used to make up the final image.
Evaluative (Multi-Pattern) Metering: Measures the light in different zones and adjusts for conditions.
Exif Print: An Exif Print-capable camera is great if you're going to be printing out photos on an Exif Print-compatible photo printer. The camera records information like exposure settings and light met . . . View Full Definition
Exposure: Exposure refers to the amount of light to which the camera's image sensor is exposed. Three factors go into exposure: aperture, shutter speed, and sensitivity. By adjusting these factors, ei . . . View Full Definition
Exposure Compensation: Adjusts exposure reading for backlight or bright conditions.
Exposure Lock: Feature that holds focus or exposure while you compose the image.
External Flash: A supplementary flash unit that connects to the camera with a cable, or is triggered by the light from the camera's internal flash. Many fun and creative effects can be created with external flash.
F-Stop: A small, circular opening inside the lens that can change in diameter to control the amount of light reaching the camera's sensor as a picture is taken. The aperture diameter is expressed in . . . View Full Definition
Face Detection: Face detection is a recent technology commonly found in point-and-shoot cameras. It recognizes one or more human faces in your frame, and sets focus priority on the people in your shot. Let' . . . View Full Definition
File: A computer document.
Fill Flash: A flash technique used to brighten deep shadow areas, typically outdoors on sunny days. Some digital cameras include a fill flash mode that forces the flash to fire, even in bright light.
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