4
Optical Transmission
This product is compatible with Nikon Creative
Lighting System (CLS). It can function as either optic
wireless master or slave flash. As a master unit, it can
control Nikon Speedlight's e.g. SB-900, and SB-910
via wireless. As a slave unit, it can be controlled by
wireless signals of Nikon Speedlight's e.g. SB-910
and pop-up flash commanders of Nikon cameras e.g.
D7100/D7000/D800
• You can set up one, two or three slave groups for i-TTL
II autoflash shooting. With i-TTL II autoflash, you can
easily create various lighting effects.
• Any flash settings (of flash exposure compensation,
high-speed sync, FE lock, FEB, manual flash, Multi
flash) on the master unit will be automatically sent to the
slave units. So the only thing you need to do is to set
the master unit to i-TTL mode without any operation for
the slave units at all during the shooting.
• This flash can work in i-TTL autoflash, M manual flash,
and Multi stroboscopic flash modes when set as a
master unit.
Positioning and Operation Range
Indoors
SLAVE
Outdoors
MASTER
• Even with multiple slave units, the master unit can control
all of them via wireless.
• In this user manual, "master unit" refers to the speedlight
attached to the camera and "slave unit" will be controlled
by the master unit.
Wireless Settings
You can switch between normal flash and wireless flash.
For normal flash shooting, be sure to set the wireless
setting to OFF
34
Wireless Flash
Photography:
15m(49.2ft)
10m(32.8ft)
80°
8m(26.2ft)
12m(39.4ft)
Modus 600RT
Master Unit Setting
Slave Unit Setting
Master Unit Flash ON/OFF
You can switch ON or OFF the "Master" unit flash that is
controlling the wireless "Slave" units. When Master flash is
ON, it will flash as group A.
For more detailed information on this feature see
description under 2.4GHz Radio control (Page 26 )
• Even if the master unit flash firing is disabled, it still fires a
preflash to transmit wireless signals
Setting the optical Communication Channel
The Modus 600RT has four optical communication
channels. The master and the speedlights must be set to
the same channel.
Master
• Press function button 3 <
select dial to set the required channel
• Press <SET> button to lock selection
Slave
• Press function button 4 <
select dial to set the required channel
• The channel must be set the same as the master
speedlight
Modus 600RT
Press <
> button
so that <
> and <
> are displayed
MASTER
on the LCD panel.
Press <
> button
so that <
> and <
> are displayed
SLAVE
on the LCD panel.
> and use the
CH
CH
> and use the
35