Camera body

A camera body to which a lens unit for forming an optical image of a subject and a flash device for shining light on the subject can be mounted, comprising:

• an imaging element configured to convert an optical image of the subject into an electrical signal, and configured to produce image data about the subject;
• a hot shoe to which the flash device can be mounted;
• and
• a camera controller configured to calculate an evaluation value on the basis of the image data produced by the imaging element, and configured to perform video autofocusing on the basis of this evaluation value,
• the camera controller configured to control the imaging element and the flash device so that when the camera controller decides that auxiliary light is needed, and the camera controller decides that the flash device mounted to the hot shoe includes an external auxiliary light source arranged to emit near infrared light, the image data is acquired while the external main light source of the flash device intermittently emits light during the video autofocusing,
• wherein the camera controller decides that the auxiliary light is not needed when the external auxiliary light source of the flash device mounted to the hot shoe is not compatible with video autofocusing.

A camera body to which a lens unit for forming an optical image of a subject and a flash device for shining light on the subject can be mounted, comprising:

• an imaging element configured to convert an optical image of the subject into an electrical signal, and configured to produce image data about the subject;
• a hot shoe to which the flash device can be mounted;
• and
• a camera controller configured to calculate an evaluation value on the basis of the image data produced by the imaging element, and configured to perform video autofocusing on the basis of this evaluation value,
• the camera controller configured to control the imaging element and the flash device so that when the camera controller decides that auxiliary light is needed, and the camera controller decides that the flash device mounted to the hot shoe includes an external auxiliary light source arranged to emit near infrared light, the image data is acquired while the external main light source of the flash device intermittently emits light during the video autofocusing,
• the camera controller includes an auxiliary light decision part configured to decide whether or not to use auxiliary light, a flash device decision part configured to decide whether or not the flash device mounted to the hot shoe includes the external auxiliary light source arranged to emit near infrared light, and a light emission controller configured to control the flash device so that the external main light source emits light intermittently during the video autofocusing on the basis of a first decision result of the auxiliary light decision part and a second decision result of the flash device decision part.