Canon 420EX User Manual
Page 19
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Flash in Full Auto Mode
s
Check that the flash exposure
confirmation lamp lights.
• When a correct flash exposure has
been obtained, the lamp lights for
about 3 sec. If it does not light,
underexposure may have occurred.
Check that the <PILOT> is lit, then
move closer to the subject and take
the picture again.
The preflash is fired to obtain a meter reading of the subject.
The main fiash is used for the actual flash exposure.
Fill Flash
Even in daylight, you can use flash as fill light to soften harsh shadows or
illuminate a dark, backlit subject.
, V
With fill flash
Without fill flash
Q With fill flash, the subject illuminated with flash might look unnatural compared to
the background's brightness. To prevent this, the flash output is reduced
automatically to obtain a more natural balance between the subject and
background brightness. This is called automatic flash output reduction.
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