Canon EOS 90D Instruction Manual page 393

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Methods of Wireless Flash Photography Using Optical
Transmission
External Speedlite
No. of
Units
Multiple
Fully
automatic
Multiple
shooting
Multiple
(E-TTL II
autofl ash)
Multiple
• Flash exposure compensation
• FE lock
External Speedlite
No. of
Units
1/multiple
Multiple
Manual
fl ash
1/multiple
Multiple
* 0 / 1 : external Speedlite; 3 / 2 : built-in fl ash
To control receivers optically, the built-in fl ash fi res even when you have set it
o
to disable fi ring.
Wireless Flash Photography Using Optical Transmission
A:B
Firing
Ratio
1
1
Settings
Settings
A:B
Firing
Ratio
Settings
Settings
Built-in
Page
Flash
= 182
= 184
Used
= 185
= 186
Used
= 187
Used
= 188
Built-in
Page
Flash
= 189
Used
Used
Settings
Wireless
Firing Group
Functions
1 All
0
0 : 3
1 All
0
1 (A:B)
0
0 + 3
1 All and 2
0 + 3
1 (A:B) 2
Settings
Wireless
Firing Group
Functions
1 All
0
1 (A:B)
0
0 + 3
1 All and 2
0 + 3
1 (A:B) 2
181

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