| 摘要 |
PURPOSE: A photographing apparatus and a method thereof are provided to reduce power consumption by detecting a high precision focusing position within a predetermined range and by controlling light emission according to a driving mode when performing focus control. CONSTITUTION: An optical image forming system(101) is formed with a zoom lens(102), an aperture(103), and a focus lens(104). The optical image forming system is a system for forming an image on an imaging device(107) from optical information received from outside and allows light from the subject to penetrate the imaging device. The zoom lens changes the focal length of the system so as to change a viewing angle and is driven by a motor(142). The aperture adjusts the quantity of transmitted light and is driven by the motor. The focus lens moves in an optical axis direction and focuses the subject on an image surface of the imaging device. The focus lens is driven by the motor. The imaging device is formed of a plurality of devices which perform photoelectric conversion for converting optical information, resulting from light penetrating the optical image forming system and being incident on the imaging device, into an electric signal. Each of the devices generates electric signals according to the light received. The imaging device uses a CCD(Charge Coupled Device) sensor or a CMOS(Complementary Metal Oxide Semiconductor) sensor. |
