Utilizing the camera's viewfinder will conserve energy. The flash is second on the list for draining battery life. Natural light is the way to go , better pictures , longer battery life. This will assist save your battery for times whenever you completely require the flash.  Viatropin A third drain on your battery is constantly utilizing your zoom. It is just logical to assume that you will use up battery power by zooming in and out. Try to find a zoom setting that works for you and keep using that same setting to preserve battery power.

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