Sony HDCAM HDW-700A Operation Manual page 214

Zebra pattern
In a video camera, striped patterns that appear in the viewfinder screen to
indicate areas of the image where the video level is approximately 70%
and 100%. Used to confirm the video level of the subject. If a zebra
pattern appears on the skin when the subject 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).
A
A-16 Appendix