1. An image acquisition apparatus comprising: a main body having a stage configured to support an object; a preview camera module provided above the stage and configured to acquire a preview image of the object; at least one main camera module provided above the stage and configured to rotate about a rotation axis to acquire a plurality of partial images of the object corresponding to different rotational positions; and an image processing unit configured to produce an image of the object by synthesizing the acquired plurality of partial images of the object.