Canon 580EX - Speedlite II - Hot-shoe clip-on Flash Instruction Manual page 4

Thank you far purchasing a Canon product.
The Canon Speedlite 58QfX is an EOS-dedicated, high-output flash unit
automatically compatible with E-TTL II, E-TTL, and TTL autoflash . It can be
used in three different wags : As a normal on-camera flash, the master unit
for a wireless, multi-Speedlite flash system, or a slave unit.
Read this instruction manual while also referring to your camera's
instruction manual .
Before using the Speedlite, read this instruction manual and your camera's
instruction manual to familairize yourself with the Speedlite operations .
s The basic operation is the same as with normal AE shooting .
When the 58DEX is attached to an EMS camera ; almost all automatic
exposure control for flash photography is handled by the camera.
It is almost the same as using the camera's built-in flash if it has one.
You can think of the 580EX as a built-in, high-output flash.
It is automatically compatible with the camera's flash metering mode
{E-TTL II, E-TTL, and TTL} .
The camera controls the Speedlite automatically in the following flash metering
modes:
1 . E-TTL II autoflash (evaluative flash metering with preflash reading/lens
distance information)
2. E-TTL autoflash (evaluative flash metering with preflash reading)
3. TTL autoflash (off-the-film metering for real-time flash metering)
Regarding the camera's available flash metering modes, refer to the
camera's instruction manual . The Speedlite's major specifications are
listed in "External Flash Items:"
The camera instruction manual's chapter on flash photography will refer to
cameras having 1 and 2 as a Type-A camera (compatible with E-TTL or
E-TTL II). And cameras having 3 (compatible with only TTL) are called
Type-113 cameras.
This instruction manual assume that you are using the 580EX with a
Type-A camera .
For Type-B cameras, see page 53 .
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