Godox QT400IIM Flash Head - Manual (Page 5)

MOD/OFF
mask
to . 1
M CH S
%
MOD/OFF
mask
to . 1
M CH S
%
The flash output is adjustable from 1/1 full power to 1/128th power in 0.1 stop increments. To obtain a correct flash
exposure, use a hand-held flash meter to determine the required flash output.
Display Flash Duration
Flash duration refers to the length of time that from flash’s firing to reach the half peak at maximum. The half peak
at maximum is usually expressed as t=0.5. In order to provide the photographer with more concrete data, this
product adopts t=0.1. The difference between t=0.5 and t=0.1 is shown in the following picture.
mask
sec to . 1
speed
Multi CH S
%
- 21 - - 22 -
Name of Parts
LCD Panel:
Radio (2.4G) Transmission
Group
Channel
High-Speed Flash Mode
Flash Duration
S1 / S2
HSS
Flash Output
Over - Temperature
Protection Icon
Beep
Mask
Delay Flash
1. Sync Cord 1. Power Cord 2. Standard Reflector 3. Lamp Cover 4. Glass Protection Cover
5. Modeling Lamp 6. Instruction Manual
Accessories
The product can be used in combination with the following accessories sold separately, so as to achieve best
photography effects:
X1 TTL Flash Trigger, Power Inverter, Softbox, Photographic Umbrella, Light Stand, Barndoor, Snoot , etc.
Separately Sold Accessories
M: Manual Flash
A
t
50%
10%
t=0.5
t=0.1
● Flash duration will only be displayed in the M mode.
Operations
Flash Preparation
1. Take down the lamp cover. Install the modeling lamp and put on the glass protection cover and the standard
reflector. (To uninstall the standard reflector, press the orange release button on the flash head and turn the standard
reflector counter-clockwise to take it out, as illustrated in the picture.)
2. Attach the flash unit on an appropriate light stand. Adjust the mounting bracket for a good angle and make sure it’s
tightened and fixed. Use the direction adjusting handle to adjust the flash on a desired direction. Umbrella input is for
different photo umbrellas to put in.
Press < MODE > button so 1
that < M > is displayed.
Turn the Select Dial to choose 2
a desired flash output amount.
Multi Flash
Light Brightness of
Modeling Lamp
mask
sec to . 1
speed
ulti M CH S
%
1 2 3 4 5 6