1. A control method for an image scanning device that creates image data by scanning an image from a recording medium on which the image is recorded, comprising the steps of controlling said image scanning device to acquire first image data by scanning the image at a first scanning resolution, and judging image type on the basis of this first image data; and in the process of controlling said image scanning device to scan the image at a second scanning resolution, acquiring second image data under image acquisition conditions dependent on the image type indicated by said image type judgment result.