Due to the limited dynamic range of digital imaging sensors, high contrast scenes often require the capture of bracketed exposures and subsequent HDR conversion in order to convey their full tonal range. The capture of bracketed exposures usually takes a couple seconds, depending on how many exposures are taken, and it requires both camera and subject to stay absolutely still during the whole process. In addition to that, there's no way of previewing the effect of a specific exposure bracketing setting, as the bracketed exposures are usually only combined...
(read more)

More...