Canon 580EX II Thank, Canon, a, purchasing, for, you, product.

Thank you for purchasing a Canon product.
The Canon Speedlite 580EX II is an EOS-dedicated, high-outputflash
unitautomatically compatible with E-TTL
II, E-TTL, and TTL autoflash.
It can serve as
an on-camera flash as well as amasterunit or aslave
unit
in awireless, multiple-Speedlitesystem. It has the same dust- and
water-resistance
as EOS-10series cameras.
•Read
this instruction manual while also referring to your
camera's instruction manual.
Beforeusing the Speedlite, read this instruction manual and your camera's
instruction manualto familiarize yourself with the Speedlite operations.
•The basic operation is as easy as with normal AE shooting.
Whenthe 580EX II is attachedto an EOS camera, almost all automatic
exposure control for flash photography is handled by the camera.
It
is almostthe same as using the camera's built-in flash if it has one. You can
thinkof the 580EX
II asabuilt-in, high-output flash, but attached externally.
•It becomes automatically compatible with the camera's flash
metering mode (E-TTL II, E-TTL, and TTL).
In accordancewith the camera's flash control system, the Speedlite controls
theflash automatically
in therespective flash metering mode:
1. E-TTL II autoflash(evaluative flash metering with preflash reading/lens
distanceinformation)
2. E-TTLautoflash (evaluative flash metering with preflash reading)
3. TTLautoflash (off-the-film metering for real-time flash metering)
Regarding the camera's availableflash metering modes, refer to the
"External Speedlite" specification
in the "Specifications" ofyour
camera's instruction manual.
Thecamera instruction manual's chapter
on flash photographywill refer
to cameras having flash metering modes 1
or 2asaType-A camera
(compatiblewith E-TTL
II orE-TTL). And cameras having flash
metering mode 3(compatiblewith only TTL) are called Type-B
cameras.
*This instructionmanual assumes that you are using the Speedlite
withaType-A camera.
ForType-B cameras, see page 55.
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