Godox AD200 TTL Pocket Flash with Barndoor Kit - Manual (Page 8)

Long press < C.Fn > button for 2 seconds to enter C.FN-F2 to choose S2 function, so that this flash can also function
as an optic S2 secondary flash with optic sensor in M manual flash mode. This is useful when cameras have pre-
flash function. With this function, the flash will ignore a single “preflash” from the main flash and will only fire in
response to the second, actual flash from the main unit.
Optic S1 Secondary Unit Setting
In M manual flash mode, Long press < C.Fn > button for 2 seconds to enter C.FN-F2 to choose S1 function, so that
this flash can function as an optic S1 secondary flash with optic sensor. With this function, the flash will fire
synchronously when the main flash fires, the same effect as that by the use of radio triggers. This helps create
multiple lighting effects.
Optic S2 Secondary Unit Setting
● S1 and S2 optic triggering is only available in M manual flash mode.
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.
With stroboscopic flash, a rapid series of flashes is fired. It can be used to capture a multiple images of a moving
subject in a single photograph.
You can set the firing frequency (number of flashes per sec. expressed as Hz), the number of flashes, and the flash
output.
Press < MODE > button so that 1
< MULTI > is displayed.
Calculating the Shutter Speed
During stroboscopic flash, the shutter remains open until the firing stops. Use the formula below to calculate the
shutter speed and set it with the camera.
Number of Flashes / Flash Frequency = Shutter Speed
For example, if the number of flashes is 10 and the firing frequency is 5 Hz, the shutter speed should be at least 2
seconds.
To avoid overheating and deteriorating the flash head, do not use stroboscopic flash more than 10 times in succession. After
10 times, allow the camera flash to rest for at least 15 minutes. If you try to use the stroboscopic flash more than 10 times in
succession, the firing might stop automatically to protect the flash head. If this happens, allow at least 15 minutes' rest for the
camera flash.
● Stroboscopic flash is most effective with a highly reflective subject against a dark background.
● Using a tripod and a remote control is recommended.
● A flash output of 1/1 and 1/2 cannot be set for stroboscopic flash.
● Stroboscopic flash can be used with“ buLb ”.
● If the number of flashes is displayed as “--”, the firing will continue until the shutter closes or the battery is exhausted. The
number of flashes will be limited as shown by the following table.
Maximum Stroboscopic Flashes:
1/4
1/8
1/16
1/32
1/64
1/128
1
7
14
30
60
90
90
2
6
14
30
60
90
90
3
5
12
30
60
90
90
4
4
10
20
50
80
90
5
4
8
20
50
80
90
6-7
3
6
20
40
70
90
8-9
3
5
10
30
60
80
Flash
Output Hz
10
2
4
8
20
50
70
11
2
4
8
20
40
70
12-14
2
4
8
20
40
60
15-19
2
4
8
18
35
50
20-50
2
4
8
16
30
40
60-99
2
4
8
12
20
40
Turn the Select Dial to choose 2
a desired flash output.
Flash Mode — Multi: Stroboscopic Flash
Display Flash Duration Operation ：
1. Long press the C.Fn button for 2 seconds to enter C.FN function.
2. Adjust the Select Dial to F6, the t0.1 icon will be displayed on the AV panel.
3. Press < SET > button to enter the adjustment condition.
4. Turn the Select Dial to choose the ON/OFF.
Set the flash frequency and flash 3
times.
● Press < SET > button to select the flash
frequency. Turn the Select Dial to set the
number. ● Press < SET > button to
select the flash times. Turn the Select Dial
to set the number. ● After finish the
setting, press < SET > button and all the
settings will be displayed.
GR/CH /C.Fn
MODE/
RST
H
sec min Hz
MK 12
t 0 1 Hz
GR/CH /C.Fn
MODE/
RST
H
sec min Hz
MK 12
GR/CH /C.Fn
MODE/
RST
H
sec min Hz
GR/CH /C.Fn
MODE/
RST
H
sec min Hz
MK 12
● The flash duration will only be displayed on the AV panel in M mode.
- 35 - - 36 -
A
t
50%
10 %
t=0.5
t=0.1