A calibration method of a photographic device, that photographs an object through a transparent body, for calibrating an absolute positional deviation and a relative positional deviation, the photographic device including a first camera and a second camera in a position separated from the first camera by a predetermined distance, the calibration method comprising: calculating the absolute positional deviation that indicates a deviation in coordinates of an image of the object due to the transparent body based on coordinates of an image of the object on photographic images, wherein calculating the absolute positional deviation further includes: calculating a first correction parameter based on a first photographic image acquired by photographing the object with the first camera without interposing the transparent body, and a second photographic image acquired by photographing the object with the first camera through the transparent body; calculating a second correction parameter based on a third photographic image acquired by photographing the object with the second camera without interposing a transparent body, and a fourth photographic image acquired by photographing the object with the second camera through the transparent body in a state where the first camera and the second camera are separated by the predetermined distance; storing the first and second correction parameters in the photographic device; and calculating the relative positional deviation that indicates a deviation in a parallax between an image of the object in the second photographic image photographed by the first camera and an image of the object in the second photographic image photographed by the second camera, wherein calculating the relative positional deviation further includes: calculating a third correction parameter based on a first corrected image and a second corrected image, the third correction parameter being used when calculating the distance information in a state where the first camera and the second camera are separated by the predetermined distance, the first corrected image being obtained by correcting, with the first correction parameter, a photographic image acquired by photographing the object with the first camera through a transparent body, the second corrected image being obtained by correcting, with the second correction parameter, a photographic image acquired by photographing the object with the second camera through a transparent body. calculating a first correction parameter based on a first photographic image acquired by photographing the object with the first camera without interposing the transparent body, and a second photographic image acquired by photographing the object with the first camera through the transparent body; calculating a second correction parameter based on a third photographic image acquired by photographing the object with the second camera without interposing a transparent body, and a fourth photographic image acquired by photographing the object with the second camera through the transparent body in a state where the first camera and the second camera are separated by the predetermined distance; storing the first and second correction parameters in the photographic device; and calculating the relative positional deviation that indicates a deviation in a parallax between an image of the object in the second photographic image photographed by the first camera and an image of the object in the second photographic image photographed by the second camera, wherein calculating the relative positional deviation further includes: calculating a third correction parameter based on a first corrected image and a second corrected image, the third correction parameter being used when calculating the distance information in a state where the first camera and the second camera are separated by the predetermined distance, the first corrected image being obtained by correcting, with the first correction parameter, a photographic image acquired by photographing the object with the first camera through a transparent body, the second corrected image being obtained by correcting, with the second correction parameter, a photographic image acquired by photographing the object with the second camera through a transparent body.