The Speedlite 600EX II-RT flash is compatible with most EOS cameras. It replaces Canon’s top-of-the-line Speedlite 600EX-RT, and improves continuous flash firing by approximately 1.1 to 1.5 times* when using AA batteries and up to two times* when adding the new optional Compact Battery Pack CP-E4N.

Additional Speedlite 600EX II-RT flash features include:

• Zoom flash head covers wide focal length range of 20–200mm; maximum guide number is 197 ft./60m at ISO 100, making the Speedlite 600EX II-RT flash the most powerful flash unit in the EOS system.
• Wireless flash shooting support is available for both radio and optical transmission with compatible Canon Speedlites, offering users greater functional range when using flash.
• Multiple flash system support allows control of up to five groups of compatible Canon Speedlites.
• Dust- and water-resistant body for reliable operation in harsh environments.
• Flash-readiness indicator on the display panel, simplified button and dial operation and variable manual flash output.
• New, specially designed accessories supplied include a built-in bounce adapter, plus SCF-E3 hard-type color filter sets, and a soft case. The new Compact Battery Pack CP-E4N is available as an optional accessory for improved continuous flash firing and more flashes per charge.
• Illuminated dot matrix LCD panel for enhanced display information, including flash mode and usable distance ranges plus C.Fn (Custom Function) and P.Fn (Personal Function) settings.

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