1. An imaging device comprising: an imaging unit that acquires a plurality of images including an image in which at least a main subject is in focus, by discretely moving a focus position and successively capturing each of the plurality of images; an image processing unit that executes image processing with respect to at least one of a reference image or a non-reference image other than the reference image, to bring degree of blur of the non-reference image closer to the reference image, the reference image being the image in which the main subject is in focus among the plurality of images acquired by the imaging unit; a detection unit that detects corresponding points of a subject in the reference image and the non-reference image, subsequent to execution of the image processing by the image processing unit; a deformation unit that deforms the non-reference image from before the execution of the image processing by the image processing unit such that positions of the corresponding points detected by the detection unit coincide; a generation unit that generates a blur-adjusted image on the basis of the reference image and the non-reference image that is deformed by the deformation unit; and a recording unit that records the blur-adjusted image generated by the generation unit at a recording medium.