Canon 220 EX User Manual

Page 13

PILOT

E-TTL

Make sure that the pilot
lamp is lit.

Aim the active focusing point
on the subject and press the
shutter button halfway.

• Focus is achieved and the shutter

speed and aperture settings are
displayed in the viewfinder and on
the LCD panel.

• The E-TTL indicator on the rear

of the Speedlite 220EX lights.

• The sync speed is set to 1/90

sec. automatically and the aper-
ture is set automatically at the
same time.

• The test preflash is fired to obtain an initial flash exposure reading which is used to compute the output of the main

flash for optimum flash exposures.

• The main flash is fired when the shutter is released to provide optimum flash exposure.

Check that the

, shutter

speed, and aperture set-
tings are displayed in the
viewfinder. Then, press the
shutter button completely
to take the picture.

The Speedlite 220EX fires a test
preflash immediately before the
shutter is released. After obtaining
an initial flash exposure reading
with the preflash, the Speedlite
220EX fires the main flash to pro-
vide optimum flash exposure.

Fully-Automatic Flash Operation

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220EX(E) 15-10-2002 07:11 Pagina 13