Pyro Industries API-1394PCI Manual de usuario descargar pdf (Pagina 323)

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GLOSSARY ■

gamma 1. The slope of the straight line por-

tion of a CRT that relates log luminance to

log voltage. 2. The portion of an image that

normally defines the midtones. Adjustable by

a colorist to create more contrast in lower

luminance areas or higher luminance areas.

gamut The complete range for a set of colors

within a given color space.

gamut boundary The outermost boundary of a

color space.

gang 1. The combination of multiple tracks

that are grouped together. 2. Slaving of a

source clip to a sequence in Xpress Pro.

gang sync A gang synchronizer. Used to syn-

chronize a picture with one or more sound

tracks on an edit bench. Measures footage

and frames.

gate The aperture assembly in which film is

exposed in a camera or projector.

generation Refers to the iteration of record-

ings, usually in analog recordings, in which

the sharpness of the electronic signal wanes

with each recorded pass. For example, a

camera master would be a first-generation

recording. An edited piece would technically

be second generation. Any duplication of the

edited piece would be third generation, and

so on. This assumes that no duplication is

done digitally, where generational loss is

actually minimal.

genlock A system whereby the internal sync

generator of a device (such as a deck) locks

onto and synchronizes itself with an external

sync generator.

gigabyte (GB) Approximately one billion bytes

of information.

GPI Acronym for general-purpose interface.

In computerized linear editing systems, A

GPI is a simple switch used to a send a start

or stop command at a specific time to vari-

ous remote components, such as digital video

effects (DVEs), character generators, video

switchers, and automated audio boards.

grading The process of adjusting color bal-

ance for each scene from a conformed nega-

tive. Also called timing or color timing.

grayscale A progression of achromatic values

from black to gray to white, usually indi-

cated on a chart.

GUI Acronym for graphical user interface.

The graphical representation on a monitor of

the software interface. Frequently pronounced

“gooey.”

GVG Acronym for Grass Valley Group. A

manufacturer of video and television produc-

tion equipment. Also an edit decision list

(EDL) file format. GVG EDLs usually refer

to their software versions. Most commonly

used are 4.0–7.0.

hamburger Slang term for the Fast menu used

to access preview mattes in an Avid.

handles Material immediately before the in

point and immediately after the out point of

a clip in a sequence. Handles are used when

consolidating, redigitizing, or otherwise mov-

ing media just in case slight adjustments need

to be made to the final sequence.

hard disk A magnetic data disk that is

mounted within a drive enclosure.

hard matte Term used when shooting original

camera negative (OCN) with a matte in place.

As opposed to a soft matte, where no physi-

cal matting is done during the production

phase.

HDTV Acronym for high-definition television.

A system having greater spatial resolution

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