Aspect Ratio - The relationship of an image's horizontal length and vertical height. The horizontal length number is placed first (i.e. 3 - 2).
Auto Focus - Selects the best focus positions depending on the subject distance. This system uses an infra-red transmitter and an infra-red receiver linked via an electronic logic circuit to a motor which moves the lens back and forth in minute steps. When the shutter button is pressed an infra-red pulse is sent from the camera. The receiving cell measures the strength of the returned pulse and the logic circuit translates this strength into a "camera to subject" distance. This information is then used to activate the electric motor that positions the lens to produce the sharpest image.
Descreening - A feature of some scanners that allow them to eliminate moir‚ patterns that can occur.
SLR Camera - The most expensive of all digital cameras, digital SLRs offer complete manual control, higher resolution, advanced exposure control, and the benefits of detachable lenses. Due to the lens design, digital SLR's are not capable of shooting video.
PAL - (Phase Altering Line standard) - This alternative to NTSC has 625 lines, interlaced, 50 fields per second. It is used in most of Europe, Asia (except USSR), Africa, and Australia, and parts of South America.
High-Quality Digital Video - Captures the full beauty of movies without sacrificing colour fidelity or detail. The DVD format assures over 500 lines of horizontal resolution, more than twice that of typical home video.
AMP - A measurement for electrical current.
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