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How to use a vari-focal lens
The following are descriptions of how to use a 2x vari-focal lens. Method of adjustment may be
different depending on the lens in use. For further information, refer to the operating instructions
of the lens in use.
z Loosen the zoom lock screw and slide it to the "T" end.
x Rotate the focus ring to one step short of the "F" end.
c Shoot an object which is located 10 m away or more, and adjust
the back focal length of the camera.
Important:
• Make sure that it is possible to focus on an object which is
located approx. 1.2 m away by rotating the focus ring when
the zoom lock screw is at the "W" end.
v Slide the zoom lock screw to an appropriate position and tighten
it.
b Rotate the focus ring to bring the camera into focus.
Important:
• When changing the angular field of view, adjust focus by
changing the zoom lock ring position and rotating the focus
ring again.
Zoom lock screw
Focus ring
W
T
N
F
2XTV LENS
3.8~8mm 1:1.4
q
w
W
T
N
F
2XTV LENS
3.8~8mm 1:1.4
t
r