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Title: Compared to my old 580 EX: (Worth Upgrading!)
Review: 1. Faster recycle than 580 ex2. The new clamp (instead of the screw) is better, faster, sturdier.3. The flash is slightly more powerful.4. The old tricky battery door is replaced with a good one.This is worth the upgrade for sure. If you have a new generation camera (5dii, 50d, etc.) it is even more of a no-brainer.
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