Optical apparatus

摘要

An optical apparatus is configured to execute a manual focus mode in which focusing is performed by an operation of a manual operating unit by moving an image pickup optical system configured to form an optical image of an object. The optical apparatus includes a diaphragm configured to adjust a light quantity, and a controller configured to control a movement of the image pickup optical system in accordance with an operating amount of the manual operating unit so that a unit moving amount that is a moving amount of an in-focus position of the image pickup optical system per unit operation of the manual operating unit corresponds to a product between a diameter of a minimum confusion circle of the image pickup optical system, a diaphragm value of the diaphragm in the manual focus mode, and a coefficient that is a natural number or a reciprocal of the natural number.

主权项

1. An optical apparatus comprising:
a diaphragm configured to adjust a light quantity; an image pickup optical system including a focus lens unit that moves during focusing and configured to form an optical image of an object; a manual operating unit configured to manually operate a movement of the focus lens unit in a manual focus mode; and a controller configured to control a movement of the focus lens unit in accordance with an operating amount of the manual operating unit by allowing setting of, as a unit moving amount that is a moving amount of an in-focus position of the image pickup optical system per unit operation of the manual operating unit, a value based on a product between a depth of focus and a coefficient that is a natural number or a reciprocal of the natural number, wherein the controller sets the coefficient larger when a distance between an in-focus position of the focus lens unit with respect to the object and a current position of the focus lens unit is larger than a predetermined threshold than when the distance is smaller than the predetermined threshold.