An experienced, battery-killing photographer knows what kills the juice in digital cameras, and it's the LCD screen. He recommends dimming, auto-sleeping, and avoiding shot review as much as possible, along with a few other battery-saving techniques.
Even if you know you took a bad or under-lit shot, don't scan back on your camera's review screen and delete it, Chris Gampat writes. Besides the actual battery usage to do so—which can, he suggests, vary with memory card speed—there's a side effect of trying to edit as you go:
Besides missing great shooting opportunities while spending time deleting your images, deleting your images on camera uses more battery life ... While you're deleting your images, people sometimes look over your shoulder and say stuff like "Oh that's a nice shot." In a situation like that, you spend more time with your LCD screen not asleep.
Gampat also suggests using an external flash, using other photographer's flash lighting in group photo situations, and avoiding keeping your batteries constantly plugged in and charging at home while you're shooting.
How do you conserve your limited batteries while you're shooting in the field? When is a digital viewfinder actually necessary over an optical view? Tell us your take in the comments. 8 Great Tips to Get More Out of Your Camera Batteries [Photography Bay via Gizmodo]