Vinten Radamec Free-d - Manual (Page 42)

Vinten Broadcast Ltd free - d ™ Installation Manual V1.4.4
Page 42 of 46
B.8 Camera zoom
The Camera Zoom is defined as the vertical angle of view of the camera; ie,
the vertical angle subtended at the camera lens by the top and bottom edges
of the active picture.
The value is expressed as a 24-bit positive unsigned number in arbitrary units
related to the rotation of the ‘zoom ring’ on the camera lens. It will be
necessary for the host system to convert this to a true zoom value based on
the type and particular sample of lens and camera in use.
B.9 Camera focus
The Camera Focus is defined as the distance between the camera lens and
an object at which the object will be in sharp focus. The value is expressed as
a 24-bit positive unsigned number in arbitrary units related to the rotation of
the ‘focus ring’ on the camera lens. It will be necessary for the host system to
convert this to a true focus value based on the type and particular sample of
lens and camera in use.