Letterbox - The full display of a wide aspect ratio 16 - 9 picture on a display of aspect ratio 4 - 3 will result in black bars above and below the picture. This arrangement is referred to as "Letterbox" and is often seen during movies shown on television.
Amplifier - A component used to amplify voltage or current. In audio systems, an amplifier is a circuit or component used for strengthening an audio signal.
Interlocking controls - To avoid accidentally changing a camera parameter, some cameras require you to use multiple controls simultaneously to change a setting. This prevents accidental setting changes while carrying the camera.
MegaPixel CCD - Image sensor found on select Hitachi DVD Camcorders. Provides 1.1 million pixels for ultra-sharp video and still photos. Still photo resolution on Hitachi DVD Camcorders that have a MegaPixel CCD is 1280x960.
Reverse 3 - 2 Pull-Down - DTV material originating on film at 24 fps is converted to the 30 fps of DTV by repeating field or frames, resulting in some motion artefacts. Some film presentations remove these repeated images before transmission and send a signal to the television causing it to process (termed Reverse 3 - 2 Pull-Down) this material appropriately to make it suitable for display. In this way, the displayed material closely matches the original film quality, avoiding the motion artefacts.
Lightness - A concept often referred to as brightness that refers to the amount of perceived light reflecting or emanating from a subject; also refereed to as Luminance.
PPI (Pixels Per Inch) - Often used interchangeably with DPI, PPI refers to the number of pixels per inch in an image.
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