13
(9) FP1•SFP1•SNS
f
ocus point1 • set focus point1 • set near stop
PRESS: focus point 1 recall ( works only while in SPEED 1 or SPEED 2)
HOLD: focus point 1 set ( works only while in SPEED 1 or SPEED 2)
LONG HOLD: set near limit stop of the lens (like mechanical limit)
(10) FP2•SFP2•SFS
f
ocus point2 • set focus point2 • set far stop
PRESS: focus point 2 recall ( works only in while SPEED 1 or SPEED 2)
HOLD: focus point 2 set ( works only while in SPEED 1 or SPEED 2)
LONG HOLD: set far limit stop of the lens (like mechanical limit)
(11) POWER
power on/off
PRESS: power on the unit
HOLD: power off the unit
Each lens model may require different focus command send rates for optimal
performance. The focus step size in use will also have an impact: larger steps will
take longer for the lens to move the focus. Is it possible also to choose one of the
six presets (acceleration presets) holding the BUTTON 5 and cycling thru different
focus responsiveness. This settings can be combined with the normal use of other
parameters.
Important: The focus points are saved on a command count basis and the controller
knows the count of each saved position based on the number of commands it takes
to reach them. If the focus command send rate is set too fast, commands will be
dropped, and saved focus points will not be accurate. Additionally, if you do not use
the homing and FAR focus settings, plus you continue to turn the focus knob after
the focus reaches either end of the focus range (lens mechanical stops), your saved
focus points will no longer work as expected.
The ability to save and return to stored focus points depends on selecting a
command send rate that is slower than the minimum time required for the lens to
move between two focus steps. If the command send rate is too quick, successive
focus commands will be sent too fast and lost. This will alter the accuracy of the
focus stops, and will result in erratic motion of the focus while using the knob. In this
case the rate must be slowed down.
