Unless you have a good power source for your flash it will start to slow down on the recharge rate after a few shots. You will have enough to get some good shots in but when the batteries start to slow down you will need to change them at that point. For candids your better off not machine gunning but looking for the right shot. Its just timing especailly with the energy of the little ones. With practice you will get the hang of it. Just shoot, shoot and did I say shoot some more
