dji Three-Channel Follow Focus Wireless Controller for Focus Iris and Zoom User Guide

: June 12, 2024
: DJi

Table of Contents

dji Three-Channel Follow Focus Wireless Controller for Focus Iris and
Product Information
Product Usage Instructions
Product Overview
Overview
Specifications
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dji Three-Channel Follow Focus Wireless Controller for Focus Iris and

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DJI Three-Channel Follow Focus
User Guide

Product Information

The DJI Three-Channel Follow Focus is designed to be attached to the DJI High- Bright Remote Monitor. It allows users to wirelessly control the focus, iris, and zoom when using a zoom lens. Additionally, it can be used to start and stop recording with the camera. The follow focus features an illuminated focus marking ring and iris marking strip, making it easy to use even in dark environments.

Product Usage Instructions

Step	Instruction
1	Turn over the follow focus. Align the monitor rotating bracket

with the threaded hole closest to the pin connector on the follow
focus. Turn the lever clockwise until it is tight and secure. Align
the positioning notch on the plain white marking ring with the
positioning marker on the focus knob and lock into place to install
the marking ring on the focus knob. (Figure 1)
2| Remove the two screws to detach the remote monitor cage from
the DJI High-Bright Remote Monitor. (Figure 2)
3| Align the threaded holes on the monitor rotating bracket with
the threaded holes on the monitor. Install and tighten the two
thumb screws. After installation, press the power button on the
left side of the monitor to power on the monitor and the follow
focus simultaneously. (Figure 3)

Product Overview

Zoom Stick: Push the zoom stick forward to zoom in and backward to zoom out. The zoom speed adjusts based on the pressure applied to the stick.
Lanyard Hole: Attach a lanyard here (not included).
MULTI Button*: Press once to mark or remove a focus point. Press and hold to remove all focus points at once. Press twice to switch between the focus knob’s three levels of resistance.
LIMIT Button*: Press once to mark or remove a limit point.
Press and hold to remove all limit points at once.

Press the MULTI button and LIMIT button at the same time to turn on or off the backlight of the focus marking ring and the iris marking strip. 5. System Status LED: Indicates the system status of the follow focus. Refer to the System Status LED Descriptions section for details. 6. REC Button: Press once to start or stop recording. The backlight stays on during recording and turns off when recording stops. 7. Iris Slider: Push the slider forward or backward to adjust the iris of the lens. 8. Focus Knob: Turn to adjust the focus of the lens. 9. Focus Marking Ring: Use a marker pen or tape to mark the focus positions. Easily change the focus marking ring when shooting different scenes or changing lenses. The backlight of the focus marking ring makes it easy to read markings in dark environments. 10. Iris Marking Strip: Use a marker pen or tape to mark the slider positions. The backlight of the iris marking strip makes it easy to read the marks in dark environments. 11. Mounting Holes: 1/4-inch threaded holes for mounting other accessories according to usage scenarios.

Introduction
The DJITM Three-Channel Follow Focus can be attached to the DJI High-Bright Remote Monitor so users can wirelessly control the focus, iris, and zoom when using a zoom lens and also to start and stop recording with the camera. The illuminated focus marking ring and iris marking strip make the follow focus easy to use even in dark environments.

Installation

Turn over the follow focus. Align the monitor rotating bracket with the threaded hole closest to the pin connector on the follow focus, and turn the lever clockwise until it is tight and secure. Align the positioning notch on the plain white marking ring with the positioning marker on the focus knob and lock into place to install the marking ring on the focus knob. (Figure 1)
Remove the two screws to remove the remote monitor cage from the DJI High-Bright Remote Monitor. (Figure 2)
Align the threaded holes on the monitor rotating bracket with the threaded holes on the monitor and install and tighten the two thumb screws. After the installation is completed, press the power button on the left side of the monitor to power on the monitor and the follow focus together. (Figure 3)

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Overview

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Zoom Stick
Push the zoom stick forward to zoom in and backward to zoom out. The zoom speed adjusts based on the pressure applied to the stick.
Lanyard Hole
Attach a lanyard here (not included).
**MULTI Button***
Press once to mark or remove a focus point. Press and hold to remove all focus points at once.
Press twice to switch between the focus knob’s three levels of resistance.
**LIMIT Button***
Press once to mark or remove a limit point. Press and hold to remove all limit points at once.

Press the MULTI button and LIMIT button at the same time to turn on or off the backlight of the focus marking ring and the iris marking strip. 5. System Status LED
Indicates the system status of the follow focus. Refer to the System Status LED Descriptions section for details.
1. REC Button
  Press once to start or stop recording. The backlight stays on during the recording and turns off when the recording stops.
2. Iris Slider
  Push the slider forward or backward to adjust the iris of the lens.
3. Focus Knob
  Turn to adjust the focus of the lens.
4. Focus Marking Ring
  Use a marker pen or tape to mark the focus positions. Easily change the focus marking ring when shooting different scenes or changing lenses.
  The backlight of the focus marking ring makes it easy to read markings in dark environments.
5. Iris Marking Strip
  Use a marker pen or tape to mark the slider positions. The backlight of the iris marking strip makes it easy to read the marks in dark environments.
6. Mounting Holes
  1/4-inch threaded holes for mounting other accessories according to usage scenarios.
7. Pin Connector
  Connect to the DJI High-Bright Remote Monitor via the pin connector. The remote monitor provides power for the follow focus.
8. Hand Strap Mounting Holes
  For mounting a hand strap (not included).
9. AF/MF Button
  Set the lens autofocus mode to AF (Auto Focus) or AMF (Automated Manual Focus) on the display of the Ronin 4D High-Bright Main Monitor.
  When set to AF mode, press the AF/MF button to switch between MF and AF mode. When set to AMF mode, press the AF/MF button to switch between MF and AMF mode.

Usage
Press the power button on the left side of the remote monitor to power on the remote monitor and the follow focus. The remote monitor provides power to the follow focus. Once powered on, the follow focus icon is viewable in the upper left corner of the remote monitor. The follow focus is successfully connected and ready for use.

To use the follow focus with the remote monitor, the video transmission system of the remote monitor must be set to Control mode.

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Focus Control
The DJI Three-Channel Follow Focus supports marking a pair of limit points and multiple focus points, which is convenient for quick and precise focusing.

To mark limit points or focus points, first switch the focus mode of the lens to MF (Manual Focus).

Limit Points
Mark Limit Points
Mark a pair of limit points for the rotation range of the focus knob to limit the focus range of the lens.

To mark the limit points:

Turn the focus knob to the first limit point (such as Point A).
Press the LIMIT button once, and the first green icon will show on the MF readings of the remote monitor.
Turn the focus knob to the second limit point (such as Point B).
Press the LIMIT button again, and the second green icon will show on the MF readings of the remote monitor.

Once completed, the focus range will be limited between Point A and Point B. The yellow triangle indicates the current focal position and can only move between the two limit points when turning the focus knob.

The limit points work in pairs. Once the first limit point is marked, the second limit point needs to be marked within 30 seconds. Otherwise, the first limit point will disappear automatically.
If three limit points are marked, the first and second limit points will disappear automatically once the fourth is marked.

Remove the Limit Points
Turn the focus knob to the limit point, and press the LIMIT button once to remove the limit point. Press and hold the LIMIT button, and an on-screen prompt will appear to remove all the limit points. Tap Confirm to remove all the limit points.
Focus Points

Mark the Focus Points
Turn the focus knob to the desired focus point, and press the MULTI button once to mark a focus point (such as Point 1). A green triangle icon will show on the MF readings of the remote monitor. A maximum of 20 focus points can be marked. When the focus knob is turned past a focus point there is an obvious resistance.

Remove the Focus Points
Turn the focus knob to the focus point, and press the MULTI button once to remove the focus point.
Press and hold the MULTI button, and an on-screen prompt will appear to remove all the focus points. Tap Confirm to remove all the focus points at once.

The DJI Three-Channel Follow Focus can memorize the marked limit points and focus points. If the remote monitor and the follow focus are powered off normally, the marked limit points and focus points will recover automatically when the remote monitor is powered on again. If the remote monitor or the follow focus is powered off abnormally (the connection between the remote monitor and the follow focus is lost due to insecure installation), the marked limit points and focus points will be removed.

Iris Control
Push the slider forward and backward to adjust the iris of the lens. The iris parameter is viewed in the upper right corner of the remote monitor.

Zoom Control
If the controlled device supports zoom (both the lens and the firmware of the recording device need to support zoom), push the zoom stick forward and backward slightly to adjust zoom. The zoom speed adjusts based on the pressure applied to the stick.

DJI Three-Channel Follow Focus Settings
Tap on the bottom left of the High-Bright Remote Monitor screen to enter System Menu, select General Settings > Three-Channel Follow Focus Settings to:

Enable or disable the zoom stick;
invert the direction of the zoom stick, focus knob, or iris slider;
Set the focus knob function as focus or zoom. If the focus knob function is set to zoom, turning the focus knob will adjust the zoom. In this case, the zoom stick has no function;
Calibrate the zoom stick. If the image automatically zooms in or out slowly in the monitor liveview when the zoom stick is enabled and not operated, tap Zoom Stick Calibration and follow the on-screen instructions to calibrate the zoom stick.

To configure the Three-Channel Follow Focus settings, the firmware version of the High-Bright Remote Monitor needs to be updated to v01.05.0400 or later.

System Status LED Descriptions

Blinking Pattern Description
Solid green Working normally
Solid red The communication between the follow focus and the remote monitor is abnormal.
Blinks red quickly Self-diagnosis failed. Restart and try again.

Firmware Update
Update the firmware of the DJI Three-Channel Follow Focus via the DJI High- Bright Remote Monitor using the DJI ASSISTANTTM 2 (Ronin Series) software.