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D. Diggler wrote:
timbop wrote:I set the 580 to use only the cpe4 batts when it is plugged in. This saves the flashes' internal batts for keeping it alive. I actually had an issue one time where the flash batts were dead even though the cpe4 had power, so the flash was useless.
I set the 580 to use BOTH the CP-E4 AND the flash's batteries, mainly because I heard recycle times are the fastest this way. And I personally have never had the flash's batteries go dead but I don't take a whole lot of flash pictures. And I use high-capacity NiMH batteries which give much longer time of usage than alkalines.
That was with eneloops, after a full day's shooting (getting ready, church, formals, reception).