Canon EX-series Speedlites
EX-series Speedlites such as the 430EX, 220EX, and MT-24EX and MR-14EX share several common features including E-TTL, FE Lock, and FP Flash modes. These modes provide the best overall performance and flexibility for automatic flash exposure control with E-TTL compatible EOS cameras, including wireless control of off-camera slave units with the 580EX, MT-24EX and MR-14EX. EX-series Speedlites function in TTL mode when used with earlier EOS cameras lacking E-TTL capability.
Canon's new flagship model, the Speedlite 580EX II, improves upon the design of the renowned Speedlite 580EX. New features include dustproof, water-resistant performance on a par with EOS-1D/1Ds series SLR cameras, the ability to change flash unit settings on the connected EOS camera, and a metal contact area for more reliable conduction. While the iIlumination and bounce angles are nearly equivalent with those of the previous Speedlite 580EX, performance has been improved to better meet professional needs through a shorter and silent recycling, and external flash metering function.
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