Image auto-focusing method and camera using same
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A focusing evaluation value calculating method used in a dynamic light source scenario, the method comprising: dividing an image region into several image sub-regions; determining an image sub-region with a dynamic light source; using the focusing evaluation values of the image sub-regions adjacent to the image sub-region with the dynamic light source to correct the focusing evaluation value of the image sub-region with the dynamic light source; and calculating a focusing evaluation value of the entire image according to the focusing evaluation value of each image sub-region, thus realizing auto-focusing in a dynamic light source scenario with very good real effect.