An accessory includes: a detection terminal; a first power supply terminal through which a first power supply voltage is supplied; a first ground terminal used as a ground potential; a second power supply terminal through which a second power supply voltage is supplied; a second ground terminal used as a ground potential; a ready terminal used to indicate whether or not communication is allowed; a first data terminal that receives a first data signal; a second data terminal that outputs a second data signal; a clock terminal that outputs a clock signal; and a third data terminal that outputs a third data signal, wherein: the first ground terminal, the second power supply terminal, and the second ground terminal are positioned between the first power supply terminal and the ready terminal; and the first data terminal and the second data terminal are positioned between the ready terminal and the clock terminal.

An image capturing apparatus, comprises an instructing unit capable of issuing an instruction for an image capture preparation operation and an instruction for an image capture operation, a metering unit configured to meter brightness of a subject, a calculating unit configured to calculate values of exposure parameters based on a metering result, an acquiring unit configured to acquire information related to an image capture lens; and a controlling unit configured to, when image capture is performed with light emitted by a light emitter, control the calculating unit so as to make different a calculation method for the values of the exposure parameters at the time of issuance of the instruction for the image capture preparation operation based on the information related to the image capture lens.

There are provided a plurality of terminals disposed in a circumferential direction of a second mount of an image capturing apparatus. The plurality of terminals correspond to a plurality of terminals disposed in a circumferential direction of a first mount of an accessory. The plurality of terminals of the image capturing apparatus include a first terminal used to supply power for driving an internal component of the accessory, and a second terminal used to supply power for controlling communication with the accessory. The first and second terminals are disposed further in a mount direction of the accessory than the other terminals of the image capturing apparatus on a predetermined stage of the terminal holder. An inter-terminal pitch between the first and second terminals is wider than at least one pitch among inter-terminal pitches of the other terminals.

There are provided a plurality of terminals disposed in a circumferential direction of a second mount of an image capturing apparatus. The plurality of terminals correspond to a plurality of terminals disposed in a circumferential direction of a first mount of an accessory. The plurality of terminals of the image capturing apparatus include a first terminal used to supply power for driving an internal component of the accessory, and a second terminal used to supply power for controlling communication with the accessory. The first and second terminals are disposed further in a mount direction of the accessory than the other terminals of the image capturing apparatus on a predetermined stage of the terminal holder. An inter-terminal pitch between the first and second terminals is wider than at least one pitch among inter-terminal pitches of the other terminals.

There are provided a plurality of terminals disposed in a circumferential direction of a second mount of an image capturing apparatus. The plurality of terminals correspond to a plurality of terminals disposed in a circumferential direction of a first mount of an accessory. The plurality of terminals of the image capturing apparatus include a first terminal used to supply power for driving an internal component of the accessory, and a second terminal used to supply power for controlling communication with the accessory. The first and second terminals are disposed further in a mount direction of the accessory than the other terminals of the image capturing apparatus on a predetermined stage of the terminal holder. An inter-terminal pitch between the first and second terminals is wider than at least one pitch among inter-terminal pitches of the other terminals.

There are provided a plurality of terminals disposed in a circumferential direction of a second mount of an image capturing apparatus. The plurality of terminals correspond to a plurality of terminals disposed in a circumferential direction of a first mount of an accessory. The plurality of terminals of the image capturing apparatus include a first terminal used to supply power for driving an internal component of the accessory, and a second terminal used to supply power for controlling communication with the accessory. The first and second terminals are disposed further in a mount direction of the accessory than the other terminals of the image capturing apparatus on a predetermined stage of the terminal holder. An inter-terminal pitch between the first and second terminals is wider than at least one pitch among inter-terminal pitches of the other terminals.

A camera module for an imaging device includes a light sensing module, a control circuit, a mounting member, one or more external lens modules, and a magnetic sensing element. The control circuit sets photographic conditions for a certain external lens module according to a control signal, the control signal being prompted by the magnetic sensing element detecting the type of the external lens module by the arrangement of magnetic components therein, as detected by the magnetic sensing element. The magnetic components have configurations corresponding to the type of the external lens module and the magnetic components assist in aligning one external lens module to the body of the imaging device. The automatic detection and photographic settings applied can be disabled by a user.

A zoom lens includes a plurality of lens units, in which a distance between adjacent lens units changes during zooming, a first aperture stop, and a second aperture stop disposed on an image side of the first aperture stop. An aperture diameter of the first aperture stop determines an F-number of the zoom lens at a wide-angle end. The plurality of lens units includes a negative lens unit having a negative refractive power that is disposed on the image side of the first aperture stop and on an object side of the second aperture. An aperture diameter of the second aperture stop changes during the zooming. The aperture diameter of the second aperture stop at the wide-angle end is larger than the aperture diameter of the second aperture stop at a telephoto end.

A zoom lens includes a plurality of lens units, in which a distance between adjacent lens units changes during zooming, a first aperture stop, and a second aperture stop disposed on an image side of the first aperture stop. An aperture diameter of the first aperture stop determines an F-number of the zoom lens at a wide-angle end. The plurality of lens units includes a negative lens unit having a negative refractive power that is disposed on the image side of the first aperture stop and on an object side of the second aperture. An aperture diameter of the second aperture stop changes during the zooming. The aperture diameter of the second aperture stop at the wide-angle end is larger than the aperture diameter of the second aperture stop at a telephoto end.

A camera module for an imaging device includes a light sensing module, a control circuit, a mounting member, one or more external lens modules, and a magnetic sensing element. The control circuit sets photographic conditions for a certain external lens module according to a control signal, the control signal being prompted by the magnetic sensing element detecting the type of the external lens module by the arrangement of magnetic components therein, as detected by the magnetic sensing element. The magnetic components have configurations corresponding to the type of the external lens module and the magnetic components assist in aligning one external lens module to the body of the imaging device. The automatic detection and photographic settings applied can be disabled by a user.