Patent ID: 8103159

Claim:
A flashing control method for a digital camera, comprising: determining indices respectively corresponding to sensitivity values; respectively obtaining main-flash intensities with respect to the sensitivity values such that their target brightness values are substantially the same after exposure, thereby constructing an energy table; firing a predetermined preflash to obtain a corresponding preflash brightness value with respect to each distinct distance; respectively obtaining main-flash indices according to maximum main-flash intensity and the energy table with respect to the distinct distances such that the target brightness values are substantially the same after exposure, thereby constructing a preflash table; and obtaining the main-flash intensity according to the preflash brightness value and the preflash table during picture capturing; wherein the preflash table is constructed according to the following steps: recording the main-flash intensities from near to distant using a basis sensitivity value; increasing the sensitivity value and recording the corresponding index after the main-flash intensity reaches the maximum main-flash intensity; and respectively converting the main-flash intensities to the corresponding indices according to the energy table before the main-flash intensity reaches the maximum main-flash intensity.