1. An endoscope apparatus, comprising: optical systems configured to form image pairs for a left-eye and a right-eye; at least one image sensor configured to capture the image pairs and generate corresponding pictorial image pairs for the left eye and the right eye; and an image processing apparatus which is configured to process a pictorial image pair from the image sensor and create a stereoscopic image pair that can be displayed on a monitor, wherein the endoscope apparatus satisfies the following conditional expression (1): 
 0.3< CP× (1+ Dt 1)<7, and CP≤ 10  (1) where: CP denotes a distance (mm) to an object from a surface of the optical systems that is closest to the object, at which an amount of left and right shift of the left-eye pictorial image and the right-eye pictorial image is 0, at a center of the monitor, and Dt 1 denotes a distortion in length at a maximum image height.