Quote Originally Posted by bardinjw


I would also recommend the 580exII (or two) instead of the 430exII. You get more power, and <s>faster recycle times</s>, and you may need as much light as you can get.



I'm not so sure about the faster recycle time part. I believe that the 580EX II has a longer recycle time than the 430EX II (at least to full charge), which makes sense - both are powered by 4 AA-size batteries, and since the 580EX II is more powerful, filling the capacitor with charge from the same power source is going to take longer. The 580EX II can have much faster recycle times with additional hardware, since unlike the 430EX II, it can be used with an external battery pack like theCanon CP-E4 Compact Battery Pack (which holds 8 AA-sized batteries).


But I agree with the recommendation to go with the 580EX II over the 430EX II. You might not be able to use flash at all during the ceremony - thus<span>mattsartin'schoices of 5D2, with its low ISO noise, combined with fast lenses is a good idea. But the room for the reception may be large, and require a more powerful flash.