Zeiss S88 Instructions For Use Manual page 105

Autofocus mode
Menu B
Brake
AF-auto:
OFF
AF
ROI
ON
AF-CCD
Position
LEFT
MODE STORE MANUAL
G-30-1426-en
Operation
SpeedFokus autofocus option
The SpeedFokus autofocus option permits you to select and automati-
cally focus on a feature in the ROI (region of interest, measuring field) in
the image of the surgical field. Prerequisite for the SpeedFokus (auto-
focus) option: a suitable video system must be installed on your OPMI
Vario surgical microscope on the suspension system, and must be
switched on.
The SpeedFokus (autofocus) function is based on the evaluation of the
video image contrast: during focusing of the microscope's Varioskop op-
tics, SpeedFokus continuously determines the video image contrast in the
selected ROI. In this way, SpeedFokus controls the microscope's Vari-
oskop optics and adjusts it to the point of maximum contrast, corre-
sponding to the point of maximum image definition.
Caution:
Glare in the video image may impair the SpeedFokus function.
OPMI Vario: Autofocus mode (MENU B)
The autofocus mode (Menu B) is only displayed if the SpeedFokus (auto-
focus) option has been installed in your system.
Path: Every time you switch on the system, the basic mode is automati-
cally displayed. Press the MODE button twice to access the auto-
focus mode (Menu B).
The autofocus mode (Menu B) permits you to make the following settings:
– Brake AF-auto, ON / OFF: activating / deactivating automatic focusing
after locking of the magnetic brakes
– AF ROI, ON / OFF: activating / deactivating the ROI display on the vid-
eo monitor
– AF-CCD Position, LEFT / RIGHT: video camera orientation, left / right
Note:
Further settings for the SpeedFokus (autofocus) option can be made in
configuration menus 3, 4 and 5 (SETTINGS 3, 4 and 5). For details,
please see the description of the configuration menus.
Automatic start of focusing on / off
Menu item "Brake AF-auto, ON / OFF" permits you to activate or deacti-
vate the automatic start of the focusing process.
For changing the position of the surgical microscope, you have to release
the magnetic brakes of the suspension system. Press the release button
for the magnetic brakes on one of the handgrips. The magnetic brakes of
the suspension system are unlocked for as long as you press one of these
release buttons.
S88 Floor Stand with Lifting Column
105
Issue 9.0
Printed on 28. 01. 2009