In order to provide a still image reader enabling easy acquisition of high resolution image data of a desired scope, sufficiently portable and not expensive at the same time, a multi-shot still image reader of the invention comprises a position detector (11) for detecting each position of the camera unit (10) from where each of the plurality of partial images is taken; a frame for unitizing the position detector (11) and the camera unit (10) and enabling displacement of the camera unit (10) parallel to the object; and means (14) for calculating candidate vectors for each of the plurality of partial images, a correction vector giving a correct position where said each of the plurality of partial images is to be synthesized being selected among said candidate vectors.