Method for controlling mobile terminal and mobile terminal

A mobile terminal, comprising:

• a lens to which light is inputted;
• a camera module configured to generate a first image by storing the light inputted via the lens;
• a flash configured to inject light to a direction at which the lens is facing;
• a laser output unit configured to inject a laser signal to the direction at which the lens is facing;
• a laser reception unit configured to detect a reflected laser signal corresponding to the injected laser signal returned in a manner of being reflected from a subject;
• and
• a controller configured to:
• calculate a distance from the subject using a difference between a time of injecting the laser signal and a time of receiving the reflected laser signal,
• calculate a brightness of a sidelight within an angle of the camera module,
• calculate a standard illuminance of the flash based on the calculated distance from the subject,
• control the flash to inject light according to the standard illuminance,
• control an exposure of the camera module based on the distance from the subject and the brightness of the sidelight, and
• store a first image containing the subject using the camera module,
• wherein if the brightness of the sidelight is dark and the distance from the subject is less than a standard distance, the controller is configured to reduce an exposure time.