| 摘要 |
PROBLEM TO BE SOLVED: To accurately adjust focus in a short time, while maintaining the image quality of a photographed image. SOLUTION: A digital camera is equipped with an element used both for imaging and for detecting the focus, in which a plurality of imaging pixels and a plurality of focus detection pixels receiving a pair of luminous fluxes after passing through a pair of areas on the exit pupil of a photographic lens are arranged on a plane surface and which receives an image formed by the photographic lens, to output an image signal, and executes a phase difference AF for detecting the focus adjustment state of the photographic lens, based on the phase difference of a pair of signal lines corresponding to a pair of luminous fluxes outputted from the plurality of focus detection pixels, to adjust the focus of the photographic lens and a contrast AF for calculating the focus evaluation value of the photographic lens, based on the contrast of the image signal outputted from the element used both for imaging and for detecting the focus, to adjust the focus of the photographic lens. In the digital camera, when the focus of the photographic lens is adjusted, the focus is roughly adjusted by the contrast AF in the step 3 and then, adjusted by the phase difference AF in the step 5. COPYRIGHT: (C)2009,JPO&INPIT |
