| 摘要 |
PURPOSE: A photographing device photographing by suing a rolling shutter is provided to use a contrast AF(Auto Focusing) process even when a subject is not stable, thereby adjusting the focus to the subject. CONSTITUTION: An image sensor(124) outputs an image signal having an electric charge accumulated in a pixel of 1 line. A focusing sensor(131) uses a contrast value of frame image data of a first image frame formed by the image signal and senses a focus fit condition state in the photographing sensor of a subject image. The photographing sensor changes the electric accumulation period. The photographing sensor extends the electric accumulation period in a photographing condition which can predict the movement of a subject.
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