Setting the Flash

Article ID: ART136959 | Date published: 05/13/2015 | Date last updated: 11/04/2015


Setting the Flash


Setting the Flash

With an EX-series Speedlite having compatible flash function settings, you can use the camera’s menu screen to set the Speedlite’s functions and Custom Functions. Attach the Speedlite to the camera and turn on the Speedlite.

For details on the Speedlite’s functions, refer to the Speedlite’s instruction manual.

1 Select [External Speedlite control].

  • Under the [] tab, select [External Speedlite control], then press <>.

  • The external Speedlite control screen will appear.

2 Select the desired item.

  • Select the menu option to be set, then press <>.

[Flash Firing]

To enable flash photography, set [To enable only the AF-assist beam to be emitted, set [Disable].

[E-TTL II Metering]

For normal flash exposures, set it to [If [Average] is set, the flash exposure will be averaged for the entire metered scene. Flash exposure compensation may be necessary. This setting is for advanced users.

[Flash Sync. Speed in Av Mode]

You can set the flash-sync speed for  flash photography in the aperture-priority AE (f) mode


: Auto

The flash sync speed is set automatically within a range of 1/200 sec. to 30 sec. to suit the scene’s brightness. High-speed sync is also possible.

1/200-1/60 sec. auto

Prevents a slow shutter speed from being set in low-light conditions. It is effective for preventing subject blur and camera shake. However, while the subject will be properly exposed with the flash, the background may come out dark.

1/200 sec. (fixed)

The flash-sync speed is fixed at 1/200 sec. This more effectively prevents subject blur and camera shake than with [1/200-1/60 sec. auto]. However, in low light, the subject’s background will come out darker than with [1/200-1/60 sec. auto].


If [1/200-1/60 sec. auto] or [1/200 sec. (fixed)] has been set, high-speed sync is not possible in the <f> mode.


[Flash function settings]

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 Speedlite’s instruction manual.


Flash mode

You can select the flash mode to suit your desired flash shooting.

[E-TTL II flash metering] is the standard mode of EX-series Speedlites for automatic flash shooting.

The [Manual flash] mode is for setting the Speedlite’s [Flash output level] yourself.

For other flash modes, refer to the Speedlite’s instruction manual.

Wireless functions

Wireless (multiple) flash shooting is possible with radio or optical transmission. For details on wireless flash, refer to the Speedlite’s instruction manual.

Flash zoom (Flash coverage)

With Speedlites having a zooming flash head, you can set the flash coverage. Normally, set this to [AUTO] so that the camera will automatically set the flash coverage to match the lens focal length.

Shutter synchronization

Normally, set this to [First-curtain synchronization] so that the flash fires immediately after the exposure starts.

If [Second-curtain synchronization] is set, the flash will fire right before the shutter closes. When this is combined with a slow shutter speed, you can create a trail of light such as from car headlights at night. With Second-curtain synchronization, two flashes will be fired: Once when you press the shutter button completely, and once immediately before the exposure ends.

If [High-speed synchronization] is set, the flash can be used at all shutter speeds. This is especially effective for portraits using fill flash when you want to give priority to the aperture setting.

Flash exposure compensation

The same setting as “Flash exposure compensation” on page 188 can be set. For details, refer to the Speedlite’s instruction manual.

Flash exposure bracketing

While the flash output is changed automatically, three shots are taken. For details on FEB (Flash Exposure Bracketing), refer to the Speedlite’s instruction manual


When using second-curtain synchronization, set the shutter speed to 1/25 sec. or slower. If the shutter speed is 1/30 sec. or faster, first-curtain synchronization will be applied even if [Second-curtain synchronization] is set.

  • By selecting [Clear flash settings], you can revert the flash settings to their defaults.
  • With an EX-series Speedlite not compatible with flash function settings, you can only set the following: [Flash firing], [E-TTL II meter.], and [Flash exposure compensation] under [Flash function settings]. ([Shutter synchronization] can also be set with certain EX-series Speedlites.)
  • If flash exposure compensation is set with the Speedlite, you cannot set the flash exposure compensation on the camera (with the <> button or flash function settings). If it is set with the camera and Speedlite, the Speedlite’s setting overrides the camera’s


Flash Custom Function Settings

For details on the Speedlite’s Custom Functions, refer to the Speedlite’s instruction manual

1 Select [Flash C.Fn settings].

  • Select [Flash C.Fn settings], then press <>.

2 Set the functions.

  • Turn the <> dial to select the number, then press <>.

  • Turn the <> dial to select the menu option, then press <>.


Clearing Flash Custom Function Settings

Selecting [Clear all Speedlite C.Fn’s] will clear all the Speedlite’s Custom Function settings (except [C.Fn-00: Distance indicator display]).


With an EX-series Speedlite, if the [Flash metering mode] Custom Function is set to [TTL] (autoflash), the Speedlite will always fire at full output.

The Speedlite’s Personal Functions (P.Fn) cannot be set or canceled with the camera’s [External Speedlite control] screen. Set it with the Speedlite


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