Z-axis
The front-to-back dimension a data chart. Usually contains values for data points.
Zebra Pattern
A camera viewfinder display that places “stripes” over the parts of an image which has reached a pre-determined video level. Usually set at about 70 IRE units and used to assure correct exposure of skin tones.
zebra stripes
Black lines superimposed over specific areas of an image in the viewfinders of some cameras used as an aid in making video level adjustments.
zoom lens
1)A lens with a continuously variable focal length and angle of acceptance.
2)A lens which has a continuously variable focal length from wide angle to telephoto.
zoom ratio
Numbers indicating zoom range for a lens. The methmatetical ratio for a zoom lens derived by dividing its shortest focal length into its longest focal length.
zoom/zooming
1)The process of varying the focal length and, therefore, the angle of view of a zoom lens.
2) The change of the field-of-view using zoom lens.
zonal staging
Placement of the actors by designating areas in the set where action will take place.
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