Datasheet
Speedlite flash
Bounce flash
When you fire light directly at a person
or animal you risk red-eye, caused by light
reflecting back off the retina at the back
of the eyeball, as well as harsh, unflattering
shadows. By tilting the Speedlite head so
that light bounces off a wall or ceiling, the
apparent size of the light source is enlarged
relative to the subject, helping light to wrap
around the subject and softening shadows.
For more flattering results, particularly
with portraits, use the tilting flash heads
found on the 270EX II, 320EX, 430EX II
and 580EX II. With the 580EX II and
430EX II, you can also make use of the
built-in catchlight panel to direct a small
amount of light towards the subject giving
eyes a ‘catchlight’, or sparkle.
E–TTL II metering will ensure the right result,
even though light has to bounce off a surface
and travel further.
Many photographers are surprised that flash can be as useful in bright daylight
as it is after dark. Used well, flash can turn a dull image into a more vibrant,
attention-grabbing one.
Understanding
Speedlite flash
Guide Number (GN)
The flash Guide Number tells you how
powerful the flash is for a given ISO setting
and coverage area. The 580EX II for example,
has a guide number of 58. Guide Numbers
for Canon Speedlites are measured in metres
at ISO 100 at the maximum zoom setting
of the flash.
Speedlite Flash units
Speedlite Flash units are not just for adding
light to dimly lit scenes; they open up a whole
range of creative potential. Using flash makes
it possible to add detail or colour, providing
greater depth and a greater emphasis on the
main subject. Understanding the following
flash functions will help to enhance your
flash photography.
WITH BOUNCE FLASH
WITHOUT BOUNCE FLASH
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