Interchangeable lens, focus detecting device, and camera body
AssigneeNikon Corporation
InventorsYuki KITA, Akira KINOSHITA
Life of this patent
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Abstract
An interchangeable lens which is mountable in and removable from a camera body having an imaging part, includes an optical system in which an exit pupil distance changes according to a position of the imaging part on an imaging surface, an input part in which information on a position on the imaging surface is input from the camera body, and an output part which outputs first information regarding the exit pupil distance of the optical system based on the information input to the input part to the camera body.
Claims15
An interchangeable lens which is mountable in and removable from a camera body having an imaging part, comprising:
- an optical system in which an exit pupil distance changes according to a position of the imaging part on an imaging surface;
- an input part in which information on a position on the imaging surface is input from the camera body;
- and
- an output part which outputs first information regarding the exit pupil distance of the optical system based on the information input to the input part to the camera body.
A focus detecting device comprising:
- an imaging part having first and second pixels which receive light that has passed through an optical system and output a signal used for focus detection;
- a selection part which selects first focus detection based on a signal output from a first pixel or second focus detection based on a signal output from a second pixel on a basis of first information on an exit pupil distance of the optical system based on information on a position of the imaging part on an imaging surface;
- and
- a focus detection part which performs the first focus detection or the second focus detection based on selection of the selection part.
Dependencies are inferred from the claim text.