Changing The Focus Command Send Rate; Focus Zone Control - Okii Systems USB Focus Controller User Manual

Controller Functions: Focus Zone Control
When the focus zone control mode is active (purple LED), you can move the focus rectangle by
using multi-function buttons 6 – 9:
Button 9: Moves the rectangle up
Button 8: Moves the rectangle right
Button 7: Moves the rectangle left
Button 6: Moves the rectangle down
To re-center the focus rectangle, press buttons 7 and 8 at the same time while the digital zoom
is at 1x.
The focus rectangle position is not synced between camera and controller, so using the on-
camera controls followed by pressing buttons 6 – 9 will cause the rectangle to reset to the last
controller issued position. Do not use both the on-camera controls and buttons 6 – 9 at the same
time while moving the focus rectangle.

Changing the Focus Command Send Rate

The focus command send rate is one of the most important settings on the FC1 USB Focus
Controller. It governs how quickly the focus can change, and allows accurate and repeatable
saved focus points. The default setting is 10 commands per second.
To enter the focus command send rate setting menu, the camera must be in focus point mode
(green LED) or settings mode (blue LED). You then enter the menu by pressing multi-
function buttons 7 and 8 at the same time. The LED will rapidly blink purple to indicate the
menu has started, and then displays a repeating sequence which shows the current command
send rate.
The sequence is made up of red and blue LED blinks. Each red blink indicates five commands per
second. Each blue blink indicates one command per second. For example:
1 red + 1 blue blink repeated = 5 + 1 = 6 commands per second
2 red blinks repeated = 5 + 5 = 10 commands per second
To increase or decrease the command send rate, press multi-function button 7 or 8. The LED will
flash purple each time either button is pressed, and the blink sequence will show the new values.
To save the command rate and exit from the menu, press multi-function buttons 7 and 8 at the
same time. The controller will switch back to whichever mode you were in previously.
The ability to save and return to stored focus points depends entirely on selecting a command
send rate that is slower than the minimum time required for the lens to switch between two
focus positions. 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 if
you intend to use the directional focus buttons or focus knob.
The focus command send rate is saved through a power cycle, so there is no need to set this
each time you turn on the FC1 USB Focus Controller.
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