5. Keep the Flash Out!
Many-a-times, the subject is simply beyond the range of the flash, and it really doesn't make sense to be expending our battery charge on a faraway subject. So the trick is to switch off the flash, and try a few other tricks. Firstly, use longer shutter speeds. Anything slower than 1/25 might require the use of a firm support or a tripod to stabilize the camera.
But this wont work if your subject is moving. In such cases, open up the aperture. But do remember that beyond a limit, opening up aperture would reduce depth of field, which can be good or bad on a case-to-case basis.
As a final attempt, crank up ISO. Most cameras have usable ISO range of up to ISO200, with SLRs offering decent photos even at ISO800 or ISO1600.
Keeping the flash out works even when the subject is close, but you want to capture it in ambient light. Say a face in candle-light. Using the flash would ruin an otherwise romantic photo. Again, avoid the flash when trying to capture another source of light in the photo - say a bulb, tube-light, candle, lamp, etc.
Photo Courtesy: Eduardo de Sao Paulo