1. An imaging apparatus, comprising: an imaging lens for forming a subject image on an imaging surface, an image sensor, positioned on the imaging surface, for capturing the subject image and acquiring image data, a processor having a focus bracket setting section, a focus stacking control section and a live view control section, the focus bracket setting section carrying out setting of a number of times of imaging and focus position setting on the imaging surface in accordance with the number of times of imaging is carried out, the focus stacking control section performing imaging at a plurality of focus positions that have been set by the focus bracket setting section, carrying out successive image combination for each imaging, and, after imaging for the number of times imaging is carried out that has been set by the focus bracket setting section, generating a focus stacking image, and a display device for displaying a focus stacked image that has been generated by the focus stacking control section, the display device including a display panel and a display driver, wherein the live view control section repeatedly carries out a series of processing for setting of focus positions using the focus bracket setting, generation of the focus stacked image by the focus stacking control section, and display of the focus stacked image by the display device, and the focus stacking control section, performs image combination of an image that has been taken at the final focus position with a previously taken image or a previously combined image, with position of the finally taken image as a reference for alignment at the time of image combination, and on the other hand performs image combination of taken images other than an image that has been taken at the final focus position with a previously taken image or an image that was previously combined, as the reference for alignment.