Abstract: An image pickup apparatus is attachable to and detachable from an accessory. The image pickup apparatus includes a communication unit configured to communicate with the accessory, a power supplying unit configured to supply power to the accessory, a memory configured to store instructions, and a processor configured to execute the instructions and instruct the accessory to update software stored in the accessory via the communication unit. The accessory is operable with power supplied from a first power supply provided in the accessory. The image pickup apparatus is operable with power supplied from a second power supply provided in the image pickup apparatus. The processor supplies the power from the second power supply to the accessory in updating the software.

Abstract: An electronic apparatus to which an accessory is detachably attached includes a first processing unit communicable with the accessory by a first communication method, and a second processing unit communicable with the accessory by a second communication method. The first processing unit receives accessory information from the accessory by the first communication method. The second processing unit communicates with the accessory by the second communication method based on the accessory information. The electronic apparatus has a first power state and a second power state in which power is lower than that of the first power state. The first processing unit communicates with the accessory by the first communication method in the first power state and the second power state. The second processing unit communicates with the accessory by the second communication method in the first power state, but does not in the second power state.

Abstract: An electronic apparatus to which an accessory is detachably attached includes a first processing unit communicable with the accessory by a first communication method, and a second processing unit communicable with the accessory by a second communication method. The first processing unit receives accessory information from the accessory by the first communication method. The second processing unit communicates with the accessory by the second communication method based on the accessory information. The electronic apparatus has a first power state and a second power state in which power is lower than that of the first power state. The first processing unit communicates with the accessory by the first communication method in the first power state and the second power state. The second processing unit communicates with the accessory by the second communication method in the first power state, but does not in the second power state.

Abstract: An electronic apparatus to which an accessory is detachably attached includes a first processing unit communicable with the accessory by a first communication method, and a second processing unit communicable with the accessory by a second communication method. The first processing unit receives accessory information from the accessory by the first communication method. The second processing unit communicates with the accessory by the second communication method based on the accessory information. The electronic apparatus has a first power state and a second power state in which power is lower than that of the first power state. The first processing unit communicates with the accessory by the first communication method in the first power state and the second power state. The second processing unit communicates with the accessory by the second communication method in the first power state, but does not in the second power state.

Abstract: There is provided an image pickup apparatus including a plurality of image capturing modes which is changeable by a user operation of a first operation member. In a first mode, an exposure control value is to be chosen and set to a fixed value by the user, and others are set to settable automatic exposure control values by the image pickup apparatus without the user's operation. In a second mode, the plurality of exposure control values are all to be set to the automatic values. In a third mode, the plurality of exposure control values are settable to a combination of the automatic value and fixed value settable in the first and the second mode by user via a second operation member, without changing the image capturing mode.

Abstract: A flash control device repeatedly informs a firing timing during an exposure period of the image capture apparatus. The device stops informing the firing timing if a condition for ending the exposure period of an image capture apparatus is satisfied. The disclosed flash control device can control the firing timing even in a case where a shooting mode of the image capture apparatus is a shooting mode with an indefinite exposure period.

Abstract: An image pickup apparatus capable of performing intermittent photography while suppressing unnatural changes in degree of blur of an object. The image pickup apparatus obtains a plurality of images by causing an image pickup section to intermittently photograph an object at predetermined time intervals. One of photography modes is selected according to the object, exposure control values to be used in photographing by the image pickup section are determined based on the selected photography mode, and exposure control is performed according to the determined exposure control values. When the selected photography mode in first photographing is a first photography mode in which an aperture value as one of the exposure control values is variable, the other exposure control values in second photographing performed after the first photographing are determined by using the aperture value determined in the first photographing.

Abstract: There is provided an image pickup apparatus including a plurality of image capturing modes which is changeable by a user operation of a first operation member. In a first mode, an exposure control value is to be chosen and set to a fixed value by the user, and others are set to settable automatic exposure control values by the image pickup apparatus without the user's operation. In a second mode, the plurality of exposure control values are all to be set to the automatic values. In a third mode, the plurality of exposure control values are settable to a combination of the automatic value and fixed value settable in the first and the second mode by user via a second operation member, without changing the image capturing mode.

Abstract: A flash control device repeatedly informs a firing timing during an exposure period of the image capture apparatus. The device stops informing the firing timing if a condition for ending the exposure period of an image capture apparatus is satisfied. The disclosed flash control device can control the firing timing even in a case where a shooting mode of the image capture apparatus is a shooting mode with an indefinite exposure period.

Abstract: An image pickup apparatus capable of performing intermittent photography while suppressing unnatural changes in degree of blur of an object. The image pickup apparatus obtains a plurality of images by causing an image pickup section to intermittently photograph an object at predetermined time intervals. One of photography modes is selected according to the object, exposure control values to be used in photographing by the image pickup section are determined based on the selected photography mode, and exposure control is performed according to the determined exposure control values. When the selected photography mode in first photographing is a first photography mode in which an aperture value as one of the exposure control values is variable, the other exposure control values in second photographing performed after the first photographing are determined by using the aperture value determined in the first photographing.