Canon 9442a008 EOS 20D Instruction Manual - Page 97
Using EOS-Dedicated, External Speedlites
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Using EOS-Dedicated, External Speedlites With EX-series Speedlites 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. • High-speed sync (FP flash) With high-speed sync, you can set a sync speed faster than 1/250 sec. • FE (Flash Exposure) Lock 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 1/3stop increments. • FEB (Flash Exposure Bracketing) The flash output is changed automatically for three successive shots (only with FEB-compatible 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-, or TL-series Speedlite set in the TTL or A-TTL autoflash mode. Use the Speedlite's manual flash mode instead if provided. 97