About a year ago I tested the power usage of the E-510, which was interesting to me because I was planning a trip to africa at the time where every drop of battery juice counted. Hawing switched to the E-3 since, I've decided to run the same tests for the heavier camera.
While perhaps a bit esoteric for some, knowing how much power your camera actually uses in different configurations can be essential in stuations where you need to get the most out of your battery. Minimizing power usage can also speed up focussing with some lenses.
