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Tektronix provides test and measurement instruments, solutions and services for the computer, semiconductor, military/aerospace, consumer electronics and education industries worldwide.
(1) Broadly, any light-sensitive photographic material consisting of a gelatin emulsion containing silver halide together with the base and any other layers or ingredients that may be required to produce a film having desirable mechanical and photographic properties (2) In discussions of the anatomy of a photographic film, the emulsion layer is any coating that contains light sensitive silver halide grains, as distinguished from the backing, base, substratum, or filter layers.
Industry:Entertainment
A video editing term that describes switching from one video source to a black level or from black to a video signal. This is commonly called a “fade to black” or “fade from black.” Fade to Black
Industry:Entertainment
a) In interlaced scan systems, the information for one picture is divided up into two fields. Each field contains one-half of the lines required to produce the entire picture. Adjacent lines in the picture are in alternate fields. b) Half of the horizontal lines (262.5 in NTSC and 312.5 in PAL) needed to create a complete picture. c) One complete vertical scan of an image. In a progressive scanning system, all of the scanning lines comprising a frame also comprise a field. d) An area in a window in which you can type text. e) A television picture is produced by scanning the TV screen with an electron beam. One complete scan of the screen is called a field.
Two fields are required to make a complete picture, which is called a frame. The duration of a field is approximately 1/60 of a second in NTSC and 1/50 or 1/60 of a second in PAL. f) One half of a complete interlaced video picture (frame), containing all the odd or even scanning lines of the picture.
Industry:Entertainment
Refers to the size of the area on the artwork which falls within the sight of the camera. Thus, a 12 field is roughly 12 inches across and a 9 field is 9 inches across. Even though a drawing or cel may be of a standard 12 or 16 field size, the camera may have been zoomed in to a 8 or 9 field, focusing on a tighter area of the artwork, eliminating the outer margins of the sheet. Most early pictures conformed to a squarish rectangular field referred to as the Academy Format. Later films, which were shot in widescreen or Cinemascope had a more rectangular active area.
Industry:Entertainment
Fill lights, commonly referred to as “scoops,” provide a softedged field of light used to provide additional subject illumination to reduce harsh shadows or areas not highlighted by the key light.
Industry:Entertainment
A process used in both analog and digital image processing to reduce bandwidth. Filters can be designed to remove information content such as high or low frequencies, for example, or to average adjacent pixels, creating a new value from two or more pixels.
Industry:Entertainment
a) Flicker occurs when the refresh rate of the video is too low and the light level on the display begins to decrease before new information is written to the screen to maintain the light level. To prevent the human eye from seeing flicker, the screen refresh rate needs to be at least 24 frames per second. b) A rapid visible change in brightness, not part of the original scene. See also Flicker Frequency, Fusion Frequency, Judder, Large-Area Flicker, and Twitter.
Industry:Entertainment
An electronic device which takes the input from a reader of Keykode numbers, decodes this information and correlates the numbers with the SMPTE time code it generates. These data, along with 3:2 pull-down status of the transfer, footage count, and audio time code (if applicable) are made available for window burn-ins, VITC-LTC recording and output to a computer. (See KODAK Guide to Film and Video Post Production - Publication H-64.)
Industry:Entertainment
The number of images contained in a single second of a moving picture. Thirty FPS is considered full-motion video. Many proprietary digital video technologies produce only 15 FPS video. Film is 24 FPS, NTSC is 30 FPS and PAL/SECAM is 25 FPS.
Industry:Entertainment
a) A frame consists of all the information required for a complete picture. For interlaced scan systems, there are two fields in a frame. For progressive video, these lines contain samples starting from one time instant and continuing through successive lines to the bottom of the frame.
b) A complete picture composed of two fields. In the NTSC system, 525 interlaced horizontal lines of picture information in 29.97 frames per second.
In the PAL system, 625 interlaced horizontal lines of picture information in 25 frames per second. c) The metal cabinet which contains the switcher’s circuit boards. d) One complete video image, containing two fields. There are 30 frames in one second of NTSC video.
Industry:Entertainment
