http://www.usa.canon.com/cusa/support/consumer/eos_slr_camera_systems/flashes/speedlite_430ex?pageKeyCode=writeReviewPage
Speedlite 430EX
11923
Features
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Significantly greater user control via new LCD panel on rear of flash
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Wide-angle pull-down panel covers 14mm lens (on a full-frame camera)
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Slightly higher max. guide number at 105mm setting (GN 141-feet, at ISO 100)
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Auto conversion of flash zoom coverage with compatible digital SLRs
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White balance info communicated instantly to compatible digital SLRs
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Bounce upward to 90°; swivel right (to 90°) and left (to 180°)
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14% lighter and approx. 25% smaller in overall volume than top-of-the-line 580EX
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Six flash custom functions built into the 430EX (set on rear LCD panel)