Like the 430EX, the 430EX II can act as a wireless slave but not as a wireless controller. The recycling time of the 430EX II is 20% faster than the 430EX, and recycling is much quieter. The 430EX II can also be fully configured via the rear LCD menus of recent Canon dSLRs as well as from its own LCD control panel. The 430EX II features the same basic appearance and layout as the 430EX but adds a metal shoe with the same locking mechanism as the 580EX II and 1/3 EV step output control in Manual mode. Image courtesy of Canon 7.2 The Canon 580EX II Speedlite It also features a 180° swivel in either direction, white balance information communication with compatible cameras, an external metering sensor for non-TTL automatic flash exposure control, and a PC socket for use with nonded-icated slave triggers. The 580EX II offers a metal foot for reliability and rigidity, a 20% improvement in recycling time, and more weather-proofing than its predecessor, the 580EX. This is currently the flagship Speedlite for all-around general photography. Here's an overview of the currently available Speedlites, followed by a comparison of features in Tables 7.1 and 7.2. Even older Speedlites easily found via online auctions can be used in multiple light setups, as long as their output can be set manually and they can be triggered remotely. If you have an older Speedlite, such as the 580 or 550, for example, they perform adequately with the 5D Mark II and can be used wirelessly for multi-flash setups, which I discuss later in this chapter. For macro work, the Macro Ring Lite MR-14EX or Macro Twin Lite MT24EX are available and provide shadowless lighting.
At this writing, three Canon non-macro flash units - the 220EX, the 430EX II, and the 580EX II - are in the stores and are compatible with the 5D Mark II.
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