A proximity wireless communication device includes a first housing and a second housing, and they are provided with respective two antennas. In the first housing, a first antenna and a second antenna are configured to be disposed on different parallel planes, and in the second housing, a third antenna and a fourth antenna are configured to be disposed on different parallel planes. Then, the first antenna and the third antenna carry out non-contact near-field wireless communication facing in proximity and the second antenna and the fourth antenna carry out non-contact near-field wireless communication facing in proximity.

A display apparatus (which may be included in an imaging apparatus) includes: a display unit; a guide display generation circuit which acquires an image file including image data and photographing posture data including information of an inclination and a height of an imaging apparatus performing an imaging operation when the image data was created by the imaging operation to generate a photographing posture guide display based on the photographing posture data; and a display control circuit which causes the display unit to display an image based on the image data and the photographing posture guide display. A data processing apparatus may include a signal processing circuit which creates an image file including image data and photographing posture data.

A display apparatus (which may be included in an imaging apparatus) includes: a display unit; a guide display generation circuit which acquires an image file including image data and photographing posture data including information of an inclination and a height of an imaging apparatus performing an imaging operation when the image data was created by the imaging operation to generate a photographing posture guide display based on the photographing posture data; and a display control circuit which causes the display unit to display an image based on the image data and the photographing posture guide display. A data processing apparatus may include a signal processing circuit which creates an image file including image data and photographing posture data.

An omnidirectional camera comprises a camera mounting frame of cylindrical hollow body, a plurality of horizontal camera units, each of which is provided on a horizontal plane orthogonal to a center line of the camera mounting frame and adapted to acquire an image in a horizontal direction. A vertical camera unit is provided so as to coincide with the center line of the camera mounting frame and adapted to acquire an image in a zenith direction. A ring-like GPS antenna is provided so as to surround the vertical camera unit.

An omnidirectional camera comprises a camera mounting frame of cylindrical hollow body, a plurality of horizontal camera units, each of which is provided on a horizontal plane orthogonal to a center line of the camera mounting frame and adapted to acquire an image in a horizontal direction. A vertical camera unit is provided so as to coincide with the center line of the camera mounting frame and adapted to acquire an image in a zenith direction. A ring-like GPS antenna is provided so as to surround the vertical camera unit.

Provided is an accessory information generation method in an imaging apparatus that is attachable to an optical device. The accessory information generation method includes: first generating accessory information that includes at least whether or not imaging is performed via the optical device in image data captured by the imaging apparatus.