Wireless Flash Controller
User Manual
General Description . . . . . . . . . . . . . . . . . 1
Conventions Used in the Manual . . . . . . . . . . 2
Supported Functions List . . . . . . . . . . . . . . . 3
Name of Parts/Quick Start Guide . . . . . . . . . . . 4-5
Preparation Before Use. . . . . . . . . . . . . . 6
Settings. . . . . . . . . . . . . . . . . . . . . 7-11
Flash Awaking and Triggering . . . . . . . . . . . 12
Control from Camera’s Menu Screen . . . . . . . . . 13
C.FN: Custom Function Settings . . . . . . . . . . 14
Other Trigger Modes . . . . . . . . . . . . . . 15
Shutter Release Function . . . . . . . . . . . . 16
Reference . . . . . . . . . . . . . . . . . . . 17-19
Troubleshooting . . . . . . . . . . . . . . . . . . 20
Specifications . . . . . . . . . . . . . . . . . . . 21
Please turn off power supplies of all equipment when
connecting or installing the product.
Please keep it dry. Be sure not to use wet hand to touch the
product. It is also not allowed to immerse the product into water
or make it be exposed in the rain. Otherwise it may not work
normally or even be damaged.
Do not use it in explosive situations. Violating this warning
may cause an explosion or fire.
This product involves battery, please be in strict accordance
with the relevant provisions on the use of the battery. Otherwise it
would cause property damage or personal injury.
General Description
Thank you for choosing products of YONGNUO.
YN622C-TX E-TTL wireless flash controller is for supporting
the use of YN622C E-TTL wireless flash trigger transceiver.
This product adopts flexible LCD menu control, supports
mixed use of E-TTL(II) mode, manual mode, or super sync flash
mode of group A/B/C flash. Supports multi flash, supports E-TTL
ratio. It can be adjusted the exposure compensation or flash
output of each group. In addition, it supports setting different
focal length(zoom)of the three groups of flash, the remote
controlled distance up to 100M, supports 7 wireless channels
and three groups A/B/C , and is equipped with AF-assist beam
emitter. Supports firmware upgrade via USB .
Compatible camera : Canon EOS series DSLR
Cameras compatible with the shutter release cable (parts):
LS-2.5/C1: 60D/70D/400Dseries/500D series/600D
series/1000D series
LS-2.5/C3: 40D/50D/7D/1D series/5D series
Conventions Used in the Manual
This manual to assume using compatible camera/flash
and YN622C transceiver in the same channel. The
features/functions supported by the product depend on the
camera and flash used. For the operation of camera, flash
ant the YN622C transceiver, please refer to relevant user
For the user manual and firmware of the latest version,
please visit the official website of YONGNUO:
Icon used in this manual:
Refers to short press the button.
Refers to long press(hold down) the button.
Supported Functions List
LCD screen display, and multi-buttons for quick operation
The firmware can be upgraded through the USB interface
Supports wireless shutter release function
The focal length(zoom)of the A/B/C three group flash can
be adjusted separately
Supports TTL Ratio A:B / A:B C
AF-assist beam emitter function (can be disabled)
Flash mode: GR(grouping flash)/E-TTL(II)/Multi flash
Supports mixed use of E-TTL(II) mode, manual flash mode or
super sync(SS) of A/B/C group flash.
The exposure compensation or flash output of A/B/C three groups
of flashes can be adjusted separately
Shutter Sync: 1st-curtain sync, 2nd-curtain sync and high-speed
sync, the highest sync speed is 1/8000s
Supports FEC, FEB, FEL
Supports modeling flash
Supports the flash zooming (auto, manual)
Super Sync (SS) time delay adjustment, for higher x-sync speed
than the camera allows
Settings saved automatically
The flash sync signal can be input through the PC port
Supports the basic flash trigger (max sync speed is 1/250s) of
standard hot shoe (non Canon body)
*The above functions need to be used with the YN622C
transceiver. Parts of functions may refer to the manufacturer
of the camera and flash(FEL,Modeling Flash ).
Name of Parts/Quick Start Guide
※The protective film can be torn out.
2nd curtain Sync
E-TTL Ratio
Battery electricity
High speed sync
Flash parameter
AF assist beam
Name of Parts/Quick Start Guide
A-LCD: Display all the settings of controller.
B-2.5MM Shutter release interface: Wireless shutter release
C-AF assist beam emitter: (P.14)
D-PC interface: Input the flash sync signal(P.15).
E-USB interface: Connected to the computer to update the
firmware (P.19).
Fbutton: Flash mode setting.
G-GR/* button: Short press to move the arrow to set flash group
or other parameters; Long press to get different functions int
different modes.
H-TEST button: Long press to wake the flash up, loosen to test
the flash(P.12).
I-Select/Set button group: Multifunction button group, including
the [UP] [DOWN] [LEFT] [RIGHT] and [OK] buttons.
J-SYNC/FN button: Short press for flash shutter sync mode
setting(P.11), long press for C.FN setting (P.14).
K-ZOOM/CH button: short press for zoom setting (P.11), long
press for channel setting(P.7) .
L-Power switch: Slide to ON for power on.
M-Status indicator : The green light will bright when in
communication; while the red light will bright when in triggering
(or shutter releasing).
N-Locking ring and locking pin
O-Hot shoe Mounting foot and contacts
P-Battery compartment and battery cover
Preparation Before Use
1.YN622C Transceiver Settings:
Set the receiving group and channel of the transceiver
(refer to the user manual of the YN622C).
2.YN622C-TX Controller Settings:
1).Installing the 2 AA (1.5V)batteries (excluded).
2).Installing the Controller on the Camera .
3).Power on when the power switch slides to [ON].
4).Channel Setting: Long press the [ZOOM/CH] button, then
press the select/set button group to the same channel as
the YN622C transceiver.
Flash Mode Setting: GR/TTL/Multi
Long press the [
mode GR/TTL/Multi.
] button to switch the flash
In GR mode, short press the [
] button to switch
the current group the arrow pointing to; in TTL/Multi
mode, short press this button can also switch the flash
1.GR-Grouping flash mode: set different flash
modes for different groups.
1).short press the [GR/*] button to
choose the setting groups.
2).Short press the [
] button
to set the flash mode of the
selected group, each press of
the setting as below:
TTL: E-TTL(II) Fully Automatic Flash
The FEC adjustment range is within -3 to +3EV, It’s
supported to press select/set button group to adjust the FEC
value. If the FEC value is set on the flash, i t will plus with the
FEC value set on the controller.
M: Manual Flash
The adjustment range is within 1/128-1/1, press [LEFT] or
[RIGHT] button to adjust, press the [UP] or [RIGHT] button
for fine adjustment.
SS(Super Sync):refer to P.14.
OFF: This group is not participate in flash.
*Long press the [GR/*] button to quickly turn off the A/B
two groups at the same time.
2.E-TTL(II)Mode -Fully Automatic Flash
1.)Set the flash group:
Long press the [GR/*] button to set the TTL flash group.
2.)Set the flash ratio or exposure compensation:
Short press the [GR/*] button to select the setting items,
then press the select/set button groups to set the
1. Flash Group- A+B+C(ALL)
Set FEC of A/B/C groups at one
2. Flash Group- A:B
Set flash ratio of A/B group
Set FEC of the A/B group(C
group does not flash )
3. Flash Group- A:B C
Set flash ratio of A/B group
Set FEC of A/B group
Set FEC of C group
The details of the flash ratio settings as below:
3.Multi Flash Mode:Stroboscopic Flash
Short press the [GR/*] button to
select the items, then press the
select/set button groups to set
the parameters.
Output power
Stroboscopic frequency
Stroboscopic flash count
*The output power of group B/C should be set up
respectively through the camera’s menu (P.13)
4.ZOOM:Flash Coverage Setting
It supports the controller to set the focal length of the
flash on the transceiver.
Short press the [ZOOM/CH]button,
set the flash focal length of A/B/C
group in sequence, then press the
Select/Set button group and set.
Settings rang supported manual
24-105mm,AU (Automatic).
5.Flash shutter sync
Short press the [SYNC/FN] button to
set the shutter sync mode(except the
multi flash).There will be a relevant
icon displayed on the LCD.
1st curtain sync
2nd curtain sync
high speed sync
Flash Awaking and Triggering
1.Flash Awaking&Testing
When half press the shutter button of the camera or press
the [TEST] button of the controller , the green wake-up
indicator light lights on, and the flash on the hot-shoe of the
transceiver will be waked up. When loosen the [TEST]
button, the flash of the selected groups will be tested for
2.Flash triggering
Completely press the shutter button of the camera will
trigger the flash synchronously, the red triggering indicator
light lights on.
Control from Camera ' s Menu Screen
When using EOS digital cameras released since
2007, you can set the controller functions from the
camera’s menu screen. For the operation of the camera,
please refer to the relevant user manual.
EOS digital cameras released since 2012:support EŸ
TTL II, manual flash, multi flash, group flash (GR).
EOS digital cameras released from 2007 to
2011:supports E-TTL II, manual flash, multi flash
Under the TTL mode, it supports the camera menu setting
FEB function. There will be relevant icon displayed on the
controller. (P.4)
Supports setting the Group A flash zoom through the
camera’s menu .
Cancels the FEB functions or turns on/off AF Assist Beam
Emitter though the C.FN Settings of the external flash menu.
*If the 2nd curtain sync enabled, please set the flash
parameters of each group through the controller.
*SS flash mode can not be controlled through the
camera menu.
Custom Function Settings(C.FN)
1).Long press the [SYNC/FN] button.
2).Press the [up] or [down] buttons
to select the setting items, then
press the [LEFT] or [RIGHT]
buttons to set the parameters.
3).Press [OK] to confirm and exit the
01-SS: Super sync delay Settings
The range of settings : 0.0-2.0 (refer to P.17)
02-SHU(Shutter):Wireless shutter function
Refer to P.16,can be set to ON/OFF
03-AF: AF assist light function
It can be set to ON/OFF, relevant icon will displayed on the
screen (refer to P.4)
04-LEG(Legacy Flash Trigger):Single contact trigger
Refer to P.15, can be set to ON/OFF
05-ECO(Ex Compat): EX series flash Compat
Refer to P.18, can be set to ON/OFF
Other Trigger Modes
2.PC interface & Legacy Flash Trigger
PC interface (input) trigger: Use LS-PC/PC cable (option)to
connect the controller and the PC interface of camera.
(Single Contact)
trigger: Install the controller on the camera hot shoe.
Legacy Flash Trigger : Basic flash
1).Transmitting group setup: Set base on the groups of the
controller (GR).
2).Flash mode setup: Set the manual flash(M) mode
through the flash control panel, change the flash output
manually, and trigger through the controller's PC
interface or main flash contact. High speed sync or other
TTL functions are not supported (the highest sync speed
is 1/250s or lower).
*About the C.FN 04 Legacy Flash Trigger:
Please set this custom function as OFF when using the
TTL triggering. If it could not operate properly when
using the single contact trigger, set as ON.
Shutter Release Function
Use the YN622C transceiver for wireless transmitting,
the YN622C-TX controller as the shutter signal output.
1).Use the LS-2.5 series shutter connecting cable to
connect the controller and camera’s shutter interface, as
for the EOS digital cameras released after 2012, it does
not need the shutter connecting cable.
2).Set the C.FN 02 as ON (P.14),turn on the wireless shutter
3).Press the [TEST] button of YN622C transceiver (if the
flash have installed) and loose, the flash will be triggered
once to test the flash. About one second later, the camera
shutter will be triggered and will flash synchronously.
Supports single shot only.
If you do not use the shutter release function, please
set the C.FN 02 as OFF.
1. About the Super Sync(SS)
Use non-HSS (Non High Speed Sync) flash to realize High
Speed Sync. This function is more applicable to strobes
flashes whose flash duration is longer. It should be used with
cameras which supports High Speed Sync (HSS) and setting
SS time delay parameters.
A-Set the controller SS time delay parameters in C.FN 01:
(refer to Page 14)
B-Using Super Sync:
1).Set the flash into manual mode. It supports to use the flash
which is set on the hot-shoe of the transceiver or connect the
flash through PC port. Setting full power flash output (1/1) may
be needed.
2).Set the flash sync speed of the camera as high speed sync,
the maximum shutter sync speeds can reach to 1/8000s.
Adjust “SS” to a suitable time delay parameters according to
the flash model, output power and shutter speed.
3).Take photos and check whether the flash of the photos is
synchronous. The gradations or variations of the light will be
seen in the photos. The flash result will be different due to
different cameras and flashes.
2. About the Automatic Save Function:
Then controller will automatically save the settings of channel,
grouping, flash mode, AF assist beam emitter etc.
3.About the Ex Compat trigger
When using the 430ex/550ex/580ex flash etc. which
does not support camera menu controlling the flash,
enable this function can use the controller to remote
control the manual flash power output of the above
1).Set the C.FN 05 of the controller as ON(P.14).
2).Set the flash on the YN622C as E-TTL flash mode.
3).Set the controller as manual flash under the GR
mode, set the flash output.
*The flash screen will not display the flash output.
*If you do not use the above model flash, please set
the C.FN 05 as OFF.
4.About the LCD backlight:
Press any button, the LCD backlight will light for 5 seconds.
5.About the battery electricity display :
The battery icon in the upper right corner of the LCD will
display the current electricity. When in low battery, the
battery icon will blink, please replace the battery.
5.Factory Reset
Hold down the [MODE] and
[SYNC/FN] buttons at the same time
until the screen as shown, then
loosen to restore factory settings.
6.USB Firmware Upgrade
1).Visit YONGNUO official website:
http://www.hkyongnuo.com to download the firmware
upgrade software and the latest firmware.
2).Turn off . Keep pressing [mode] button and turn on again. The
screen will show firmware upgrade interface(will display the
current version ).
3).Connect the controller to PC via USB-MINIB cable (not
include) .
4).Complete the firmware upgrade operation according to the
prompt of software.
1. Fail to power on or automatic shutdown:
The battery is loaded inversely or exhausted.
Install the battery according to the correct direction the
battery compartment indicates and ensure the battery is full
and restart the power .
2. The flash doesn't fire
Ensure the power of all equipments are full, the flash is
in ready state(the flash-ready indicator on)
Ensure the connection among the controller( transceiver),
camera and the flash is reliable.
Whether the controller and transceivers are set in the
same channels and controllable groups.
3. TTL underexposure or overexposure:
Check whether the camera body or the flash sets
exposure compensation. It may be underexposed if exceeds
the effective flash distance. It may overexpose when TTL
and manual flash are used at the same time, at this time the
manual flash suits to be used as a backlight.
When other trouble occurs during using, it's suggested
to deal with the trouble with the procedures as below:
1). Restart all the equipments.
2). Replace the batteries of the controller and transceivers.
3). Reset the factory set of the controller and transceivers.
4).Reset the factory set of the camera/flash.
System type: Digital FSK 2.4GHz wireless controller
Distance: 100M
Channel: 7
Flash mode: GR(E-TTL(II), Manual, Super Sync)/E-TTL(II)/Multi
Sync mode: 1st-curtain, 2nd-curtain, Hi-speed sync(HSS)
Groups: 3Groups (A/B/C)
MAX Sync speed: 1/8000s
Trigger Interface: Hot-shoe,PC port
Shutter release interface: 2.5MM shutter release interface
TTL Ratio: support
USB Firmware Upgrade: support
AF Assist Beam Emitter: support
Zoom: support
Battery: AAX2(support 1.2 V rechargeable battery)3V
Stand-by time: 120h
Dimensions: 89.5×53×39mm
The functions of this user manual are based on test
conditions of our company. Further notice will not be given if
the design and specifications change.
The YONGNUO logo in this manual includes the registered
trademark or trademark of Shenzhen Yongnuo Photography
Equipment Co.,Ltd in China or/and other countries(regions).
All other trademarks are the property of their respective
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