Setting External Flash Custom Functions - Canon EOS M3 User Manual

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Option
Description
With Speedlites that have a zooming flash head,
you can set the flash coverage. Normally, set this
Flash zoom
to [AUTO] so that the camera will automatically
(Flash coverage)
set the flash coverage to match the lens focal
length.
Change the timing of the flash and shutter
release as follows.
] will fire the flash immediately after the
[
shutter opens.
] will fire the flash immediately before
[
the second curtain closes. If the shutter
speed is 1/30 second or faster, first-curtain
Shutter
synchronization
synchronization will be used automatically
even if [Second-curtain synchronization] is
set.
] allows you to use the flash at all shutter
[
speeds. This is especially effective for
portraits using fill flash when you want to give
priority to the aperture setting.
This allows you to adjust exposure
compensation when the flash fires. For details,
refer to the instruction manual for the flash. If
flash exposure compensation is defined on the
Flash Exp. Comp
Speedlite, you cannot set it on the camera side.
If it is defined on both the camera and flash, the
flash's setting overrides the camera's.
Define the power output of the flash. For details,
refer to the instruction manual for the flash. If it is
Flash output
defined on both the camera and flash, the flash
level
setting overrides the camera setting.
Activates FEB (Flash Exposure Bracketing),
Flash exposure
taking three shots while automatically changing
the flash output. For details, refer to the
bracketing
instruction manual of your FEB-compatible flash.
Defines the flash count and frequency when
Flash count,
Flash frequency
[Flash Mode] is set to [MULTI].
Option
Description
Define the flash output level when using wireless
Ratio control
(multi-flash) shooting or the MR-14EX II.
The [Built-in flash settings] screen cannot be accessed when an
external flash is attached.
On the screen, the settable functions and the display will differ
depending on the Speedlite, current flash mode, flash Custom
Function settings, etc. For details on your Speedlite's flash
functions, refer to the instruction manual of the Speedlite (sold
separately).
With an EX-series Speedlite not compatible with flash function
settings, only [Flash Exp. Comp] can be adjusted. ([Shutter
synchronization] can also be set with certain EX-series
Speedlites.)

Setting External Flash Custom Functions

For details on the Speedlite's Custom Functions, refer to the instruction
manual of the Speedlite (sold separately).
Press the [
[External flash C.Fn setting] (within [Flash
Control] on the [
the [ ] button.
Press the [ ][ ] buttons or turn the [ ]
dial to select an option, and then press
the [ ] button. On the next screen, press
the [ ][ ] buttons or turn the [ ] dial to
choose a setting, and then press the [ ]
button to adjust it.
Set [Flash metering mode] to [1:TTL] (automatic flash metering)
in [External flash C.Fn setting] to fully fire the flash when shooting.
Before Use
Basic Guide
Advanced Guide
1
2
3
4
5
6
7
8
] button, select
9
3] tab), and then press
10
Index
Camera Basics
Auto Mode /
Hybrid Auto Mode
Other Shooting Modes
P Mode
Tv, Av, M, and C Modes
Tv, Av, and M Mode
Playback Mode
Wi-Fi Functions
Set-Up Menu
Accessories
Appendix
156

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