Digital photographing apparatus, method of controlling the same, and a computer-readable medium storing program to execute the method

A digital photographing apparatus comprising:

• a target subject determination unit configured to determine at least one target subject from an input image;
• an auto-focusing unit configured to extract a target subject focus value of the at least one target subject while auto-focusing the at least one target subject;
• an in-focus determination unit configured to determine whether the target subject focus value stays within an in-focus range for a reference time or longer;
• and
• a photographing control unit configured to perform an auto-photographing in response to a determination that the target subject focus value has stayed within an in-focus range for a reference time or longer.

A non-transitory computer program product, comprising a computer usable medium having a computer readable program code embodied therein, said computer readable program code adapted to be executed to implement a method of controlling a digital photographing apparatus, said method comprising:

• determining at least one target subject from an input image;
• extracting a target subject focus value of the at least one target subject while auto-focusing the at least one target subject;
• determining whether the target subject focus value stays within an in-focus range for a reference time or longer;
• and
• in response to a determination that the target subject focus value has stayed within an in-focus range for a reference time or longer, auto-photographing the at least one target subject.