Patent ID: 7379094

Claim:
An electronic still imaging apparatus comprising: an imaging element for acquiring an image of an object as image data; monitor means for controlling the imaging element and outputting a dynamic image to monitor the image of the object; detection means for detecting a shift vector from the output of the monitor means; exposure control means for controlling the imaging element and acquiring a plurality of original images whose exposure amounts are different from each other; a storage device which stores the plurality of original images acquired by the exposure control means; a positional displacement correcting device which obtains positional displacements of the plurality of original images stored in the storage device, on the basis of the shift vector detected by the detection means, and stores a plurality of corrected original images whose positional displacements are corrected based on the obtained positional displacements in the storage device through updating, wherein the shift vector is detected from an image other than the plurality of original images; and synthesis means for synthesizing an image whose dynamic range has been expanded from the plurality of corrected original images that are stored through updating.