There is provided an imaging apparatus which includes image acquiring means for acquiring an image of an object; storing means for temporarily storing an image acquired by the image acquiring means; and control means for detecting a portion having changed upon comparison of a first image and a second image which are stored in the storing means, each image acquired by the image acquiring means at a different time, and to focus on the portion having changed.

 
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< Method for focusing by using a pre-flash

> Digital stereo camera/digital stereo video camera, 3-dimensional display, 3-dimensional projector, and printer and stereo viewer

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