Letterbox - Letterbox refers to the image of a wide-screen picture on a standard 4:3 aspect ratio television screen, typically with black bars above and below. It is used to maintain the original aspect ratio of the original source (usually a theatrical motion picture of 16:9 aspect ratio or wider).
DPI (Dots Per Inch) - The unit of measure used to describe the resolution of image files, scanners, or output devices. The measure of distinct pixels that a device can produce either horizontally or vertically in one inch.
Magenta - A subtractive primary color for printing. It is made up of equal parts of red and blue projected light.
35mm equivalency - What a digital lens would be equivalent to in terms of a 35mm film SLR camera. Used as a standard for discussing the field of view and magnification power of a lens. In 35mm equivalency, lenses over 50mm are telephoto, whereas lenses below 50mm are wide-angle or fisheye lens. In a digital SLR, a mirror placed in front of the focal plane (where the image sensor sits) bounces the light that comes from the lens upward into a prism and then out the eyepiece. When you press the shutter button, the mirror flips up out of the way so the light can pass to the focal plane.
Simulated Stereo Surround Mode - With the Simulated Stereo Surround Mode, one of several different modes in audio receivers and systems shape sound to more closely resemble a live performance. Simulated settings provide a simulated spatial surround sound when playing mono source material.
Native Application - An application that comes already installed in a new handheld computer.
Calibration - A process of setting digital imaging components to standardized settings that will produce accurate and predictable results in the output.
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