OP Tx (Master) and OP Rx (Slave) Wireless Modes
OP Tx (Master) and OP Rx (Slave) modes use Canon wireless control and trig-
gering system. A Mitros+ ash set to OP Tx (Master) is needed on the camera to
control remote (slave) ashes set to OP Rx (Slave). The same transmission chan-
nel needs to be set on both Master and Slave ashes. Groups need to be set for
Slave ashes, Group Ratio functions need to be set for Master ashes. A Mitros+
set to OP Tx (Master) or other compatible ash in Master mode can be used
on the camera to control and trigger Mitros+ ashes in OP Rx (Slave), or other
compatible ashes in Slave mode.
OP Tx (Master) Mode:
1. Pressing
button will allow changes to be made to the ash ring,
transmission channel and ratio mode and ratio.
2. With the ash icon
highlighted and blinking press the or
buttons to turn the ash ring on or o (see below).
3. With transmission channels highlighted, press the
or but-
tons to change the channel from 1-4.
4. With the ratio mode highlighted, press the
or buttons to
change the wireless ratio mode (see below).
5. With the ratio highlighted, press the
or buttons to change
the wireless ratio. When in M or Multi mode, ash parameters of the slave
units can be set individually on the OP Tx (Master) ash (see below).
6. Press the
button to conrm and exit the screen.
Master with Flash mode : The Master ash on the camera will re
when a photo is taken.
Master without Flash mode : The Master ash on the camera will
not re when a photo is taken. The ash will emit a short burst of light to
communicate with slave ashes but this light will not be part of the exposure.
To set OP Rx (Slave) Mode:
1. Pressing button will allow changes to be made to the ash’s channel
and group.
2. With transmission channels highlighted, press the
or But-
tons to change the channel from 1-4.
3. With group highlighted, Press the
or Buttons to change the
group the ash is assigned to (A,B,C).
4. Press the
button to conrm and exit the screen.
5. When OP Rx (Slave) ashes are ready to shoot the AF Assist light on the
front of the ash will blink once every 1 second.
6. To set Multi or M modes for the Slave – press and hold the
button for
approximately 2 sec.
7. Set Power Levels or Multi Strobe Frequency / Flash Count using the arrow
buttons.
Please note:
- Make sure the OP Tx (Master) and OP Rx (Slave) ashes are set to the same
transmission channel (1-4).
- Do not place any obstacles between the master unit and slave unit(s). Obsta-
cles can block signal transmissions.
- When using wireless bounce ash, please ensure the slave ash Wireless Signal
Receiver Area faces toward the Master ash.
- When using only one ash set Wireless Mode to “O”.
Transmission Channels
The Phottix Mitros+ OP Tx/Rx Wireless system has four transmission channels: 1,
2, 3 and 4. Signals from the OP Tx (Master) ash are sent to OP Rx (Slave) ashes
on these channels. If Master and Slave ashes are set to dierent channels the
Slave ashes will not re.
Using OP Tx/Rx Wireless Triggering
With a ash in OP Tx (Master) mode on the camera and remote ashes in OP Rx
Slave mode, pressing the shutter button will re the OP Tx (Master) ash (if set to
re the ash) and ashes set to OP Rx (Slave) mode within the range of the OP Tx
(Master) ash. The camera and ash will meter the scene and re ashes in TTL
mode to properly expose the scene.
Ratio Modes
Slave ashes can be controlled by the master ash in dierent ratio modes.
Available modes are:
ETTL Modes
A+B+C All three groups re at an average of the total calculated output.
A:BC Groups A and B can be set by Flash Ratio (see below). Group C is inde-
pendent with its ash output level assigned by the camera.
The EV compensation of Groups A and B can be adjusted.
1. Press the
button after exiting the Flash Ratio Setting Screen.
2. Press the
or buttons to adjust up or down EV for Groups
A and B.
3. The EV compensation for Group C can also be adjusted.
4. Pressing the
button after setting the ash ratio will move the high-
lighted selection to EV adjustment for Group C.
5. Press the
or buttons to adjust the EV for Group C.
A:B Groups A and B can be set by Flash Ratio (see below). Group C is not
adjustable and does not re.
The EV compensation of Groups A and B can be adjusted.
1. Press the
button after exiting the Flash Ratio Setting Screen.
2. Press the
or buttons to adjust up or down EV for Groups
A and B.
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