Using Flash Control Options

With the XSi/450D, many of the onboard and accessory flash settings are available on the camera menus. The Set-up 2 (yellow) menu offers onboard flash settings including the first or second curtain shutter sync, Flash Exposure Compensation, and E-TTL II or Average exposure metering.

When an accessory Speedlite is mounted, you can use the Set-up 2 (yellow) menu to set FEC and to set Evaluative or Average flash metering. In addition, you can change or clear the Custom Function (C.Fn) settings for compatible Speedlites such as the 580 EX II. If the Speedlite functions cannot be set with the camera, these options display a message notifying you that the flash is incompatible with this option. In that case, set the options you want on the Speedlite itself.

To change settings for the onboard or compatible accessory EX-series Speedlites, follow these steps:

1. Set the camera to a Creative Zone mode such as P, Tv, Av, M, or A-DEP. If you're using an accessory Speedlite, mount it on the camera and turn on the power.

The XSi/450D is compatible with the Canon 580EX II, 430EX, 220EX, Macro Ring Lite MR-14X, and Macro Twin Lite MT-24EX, although available options for each Speedlite may vary on the External flash func. setting screen menu that's accessed from the Flash Control screen.

2. Press the Menu button, and then press the right cross key until the Set-up 2 (yellow) menu is displayed.

3. Press the down cross key to highlight Flash Control, and then press the Set button. The

Flash Control screen appears with options for the built-in and external flash.

4. Press a cross key to highlight the option you want, and then press the Set button. Choose a control option from the Flash Control menu and press the Set button. Table 7.3 lists the menu settings, options, and suboptions that you can choose from to control the flash.

Table 7.3 Flash Control Menu Options

Setting Option(s) Suboptions/Notes

Table 7.3 Flash Control Menu Options

Setting Option(s) Suboptions/Notes

Built-in flash func. setting

Flash mode

Cannot be changed from E-TTL II

Shutter Sync

1st curtain: Flash fires immediately after the exposure begins.

2nd curtain: Flash fires just before the exposure ends. Can be used with slow-sync speed to create light trails behind the subject.

Flash exp. Comp

Press the Set button to activate the Exposure Level meter, and then press a cross key to set positive or negative compensation.

E-TTL II

Evaluative (default) option sets the flash exposure based on an evaluation of the entire scene. Average option flash exposure is metered and averaged for the entire scene. Results in brighter output on the subject and less balancing of ambient light in the scene.

Setting

Option(s)

Suboptions/Notes

External flash func. setting

Flash mode

E-TTL II

Shutter sync

1st curtain: Flash fires immediately after the exposure begins.

2nd curtain: Flash fires just before the exposure ends. Can be used with slow-sync speed to create light trails behind the subject.

Exposure

Bracketing)

Press the Set button to activate the Exposure Level meter, and then press a cross key to set the bracketing amount.

Flash exp. comp

Press the Set button to activate the Exposure Level meter, and then press a cross key to set positive or negative compensation.

E-TTL II

You can choose either Evaluative or Average metering.

External flash C.Fn setting

(The available options depend on the Speedlite's Custom Functions.)

Press the Set button, and then choose the C.Fn settings you want to set for the Speedlite you're using.

Clear ext. Clears C.Fn flash C.Fn set settings for the Speedlite you're using.

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Responses

  • keegan
    What external flash for canon 450d?
    16 days ago

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