1. A panorama photography method comprising: capturing a first image for a segment of a panorama photograph; generating a guide image from a predefined section of the first image; detecting a first edge in the guide image; acquiring a preview image for a second image to be captured, the second image being adjacent to the first image; detecting a second edge in the preview image, the second edge being obtained from a predefined part of the preview image, the predefined part coinciding with the guide image; comparing the first edge with the second edge to determine a degree of correspondence between the first edge and the second edge; generating notification data, indicating a degree of correlation between the guide image and the predefined part of the preview image, based on a comparison of the degree of correspondence between the first edge and the second edge with at least one critical value, and a synthetic image synthesized from the guide image and the preview image; and outputting the synthetic image and the notification data.