Canon 40D, EOS40D28135, EOS40DBODY Using the Built-inFlash, 8C.Fn, 1:1/250sec. (fixed), Flash sync. speed in Av mode, Using the Built-inFlash in the Basic Zone

Using the Built-in Flash

E-TTL II autoflash obtains high-precision and consistent flash shots.

Using the Built-in Flash in the Basic Zone

If necessary, the built-in flash will pop-up automatically in low-light or backlit conditions. (except in <3> <5> <7> modes)

Using the Built-in Flash in the Creative Zone

Regardless of the light level, you can press the <D> button to pop-up and fire the built-in flash whenever desired. If the built-in flash has popped up, you can push it back down with your fingers.

d: For fully automatic flash photography. The shutter speed (1/ 60 sec. - 1/250 sec.) and aperture are set automatically.

s: Enables you to set the desired shutter speed (30 sec. - 1/ 250 sec.). The flash exposure will be set automatically to match the aperture that was set automatically.

f: Enables you to set the desired aperture. The flash exposure will be set automatically to match the aperture that was set. The shutter speed will set automatically between 30 sec. - 1/250 sec. to suit the scene’s brightness.

In low light, the main subject is exposed with the automatic flash, and the background is exposed with a slow shutter speed set automatically. Both the subject and background look properly exposed (automatic slow-speed flash sync).

With slow shutter speeds, using a tripod is recommended.

If you do not want to use a slow shutter speed, set [8C.Fn I -7] (Flash sync. speed in Av mode) to [1:1/250sec. (fixed)]. (p.155)

a: You can set both the shutter speed (bulb or 30 sec. - 1/250 sec.) and aperture. The flash exposure will be set automatically to match the aperture that was set. The background exposure will vary depending on the shutter speed and aperture.

8: The flash result will be the same as the <d> mode.

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