Disclosed herein is a combined panoramic, CT and cephalometric photographing apparatus including: a base; a supporting pole; an elevation member; a panoramic and CT photographing part; and a cephalometric photographing part. A sectional area perpendicular to the array direction of the ejection orifices at the central part of the beam-like projection in the array direction of the ejection orifices is larger than a sectional area in the direction perpendicular to the array direction of the ejection orifices at both ends of the beam-like projection in the array direction. Since the rolling center coincides with all three, two, or one of those centers, a rotational moment is not generated on the lens holder and, therefore, generation of unnecessary resonance can be prevented.