1. An image pickup apparatus comprising: an image pickup unit configured capable of obtaining a set of plural input images with different exposure amounts by photographing the same subject; an image synthesizing unit which creates a synthesized image from the set of plural input images with the different exposure amounts; a live-view image output unit which outputs a live-view image on the basis of the synthesized image created by synthesizing a set of n (n is an integer not less than 2) input images with different exposure amounts obtained from the image pickup unit in the image synthesizing unit during a live-view display operation; and a recorded image creating unit which creates an image for recording on the basis of the synthesized image synthesized in the image synthesizing unit and created by synthesizing a set of m (m is an integer not less than 2) input images with different exposure amounts obtained from the image pickup unit during main photographing.