Optical apparatus

摘要

An optical apparatus includes an image sensor that includes a focus detecting pixel and an image pickup pixel, a first focus detector configured to provide a focus detection based upon a phase difference between the pair of image signals detected by the focus detecting pixel of the image sensor, a second focus detector configured to provide a focus detection based upon a contrast value based upon an output of the image pickup pixel of the image sensor, and a controller configured to provide autofocus utilizing the first focus detector when a focus detection precision of the first focus detector is equal to or higher than a first value and an image magnification variation amount calculated from a wobbling amount of the image pickup optical system used for the second focus detector is equal to or higher than a second value.

主权项

1. An optical apparatus operable in a still image pickup mode and a motion image pickup mode, the optical apparatus comprising:
an image sensor configured to detect a pair of image signals, and configured to photoelectrically convert an optical image formed by an optical system; a first focus detector configured to provide a focus detection based upon a phase difference between the pair of image signals detected by the image sensor; a second focus detector configured to provide a focus detection based upon a contrast of the optical image formed by the optical system; and a controller configured to perform a focusing operation in the motion image pickup mode by using the first focus detector when an image magnification variation amount by a wobbling of the optical system used for the second focus detector is equal to or higher than a threshold and by using the second focus detector when the image magnification variation amount is less than the threshold.