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White balance adjustment
In the light of a particular color temperature, to adjust the white levels of the R, G, and B channels of a color video camera so that any white object shot in that light is reproduced as a truly white image. See also Color temperature.
White shading
When shooting a white object, the upper and lower portions of the screen may appear magenta or green while the central portion appears white, depending on the performance of the camera lens. This is called white shading.
Zebra pattern
In a video camera, striped patterns which appear in the viewfinder screen to indicate areas of the image where the video level is higher than a certain value. If a zebra pattern appears on the skin when the object is a human being, that is a correct exposure.
Zoom
To gradually change the field of view of a camera lens from wide to narrow angle (zoom in) or narrow to wide angle (zoom out).