1. An image processing method comprising: a flash-component-image calculating step of calculating flash-component image data based on first image data captured without flash emission and second image data captured with flash emission; an intensity-adjusting-value calculating step of calculating an intensity adjusting value for the flash-component image data; an intensity-adjusted-flash-component-image calculating step of calculating intensity-adjusted-flash-component image data by using the intensity adjusting value; and a finally-adjusted-image generating step of generating finally-adjusted image data based on the first image data and the intensity-adjusted-flash-component image data.