The present invention provides an imaging apparatus, a communication device, an imaging method, and an information notification method. The imaging apparatus includes: an imaging unit that generates image data by photographing a subject image; a feature information generation unit that generates feature information smaller in data amount than the image data, the feature information indicating features of a subject image included in an image corresponding to the image data; an imaging-side first communication unit which is connected with outside communication devices so as to be able to receive and send information; an imaging-side second communication unit which is configured to be connected with communication devices in a communication manner different from the communication manner between the imaging-side first communication unit and the outside communication devices; a communication status determination unit that determines the status of communication between an external communication device and the imaging-side first communication unit; and an imaging-side communication control unit that transmits the feature information to the communication device via the imaging-side second communication unit when the status of communication between the communication device and the imaging-side first communication unit is not favorable.