An EOS-dedicated, EX-series Speedlite makes flash photography as easy as normal shooting. You can easily do the flash operations below. For detailed procedures, see the Speedlite's instruction manual.
• E-TTL II Autoflash
E-TTL II Is a new autoflash exposure system Incorporating Improved flash exposure control and lens focusing distance Information, making It more precise than the previous E-TTL (evaluative flash metering with preflash) system. The camera can execute E-TTL II autoflash with any EX-series Speedlite.
With high-speed sync, you can set a sync speed faster than 1/250 sec.
Press the camera's <■$(■>button to lock the flash exposure at the desired part of the subject.
• Flash exposure compensation
In the same way as normal exposure compensation, you can set exposure compensation for flash. Set flash exposure compensation up to ±3 stops In 1/3-stop Increments.
• FEB (Flash Exposure Bracketing)
The flash output Is changed automatically for three successive shots (only with FEB-compatlble Speedlites). Set flash exposure bracketing up to ±3 stops In 1/ 3-stop Increments.
• E-TTL II wireless autoflash with multiple Speedlites
As with wired, multiple Speedlites, wireless E-TTL II autoflash with multiple Speedlites provides all the above features. Since connection cords are unnecessary, flexible and sophisticated lighting setups are possible (only with wireless-compatible Speedlites).
About EZ/E/EG/ML/TL-series Speedlites The flash cannot be fired with an EZ-, E-, EG-, ML-, orTL-series Speedlite set in the TTL or A-TTL autoflash mode. Use the
Speedlite's manual flash mode instead if provided.
Using EOS-Dedicated, External Speedlites
" • When using an external Speedlite, retract the built-in flash before mounting the external Speedlite.
• If the EX-series Speedlite's firing mode is set to TTL autoflash with the Custom Function, the Speedlite will not fire.
51 • If autofocus cannot be achieved, the external, EOS-dedicated
Speedlite's AF-assist beam (if the Speedlite has an AF-assist beam) will be emitted automatically (except in modes).
• The EOS 20D is aType-A camera that can use all the features of EXseries Speedlites.
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