In a focus adjustment method for an imaging apparatus, that, in order to focus on a single or a plurality of point light sources, acquires plurality of image data while moving a focus lens in an optical axis direction and carries out focus adjustment based on the image data, brightness values of pixels within a given evaluation region are detected based on the image data, high brightness evaluation values are calculated based on the brightness values, symmetry of the high brightness evaluation values are calculated for movement of the focus lens, and focus adjustment is carried out based on an extreme value calculated based on the symmetry.

Imaging apparatus and focus adjustment method

A focus detection apparatus according the present invention includes: a normal focus detection information acquiring section which detects a normal AF evaluation peak position from contrast information; a special focus detection information acquiring section which detects a special AF evaluation peak position among different focus positions using brightness information and the contrast information; a determination section which determines information to be used for focus detection using the brightness information and either of the normal AF evaluation peak position and the special AF evaluation peak position, and a focus detection calculation section which calculates a focus detection position using the information to be used for focus detection determined by the determination section.

Focus detection apparatus and focus detection method

A signal processing apparatus according to an embodiment of the present disclosure includes a positioner and a synthesizer. The positioner generates, on the basis of two pieces of RAW data different in angle of view from each other, positioning data of the two pieces of RAW data. The synthesizer synthesizes the two pieces of RAW data with each other on the basis of the positioning data generated by the positioner.

Signal processing apparatus and imaging apparatus

The present invention provides an imaging apparatus, a focus adjustment method and a recording medium which are irrelevant with the saturation of a high brightness evaluation value and can focus wellin a shooting scene having a lot of stars. The imaging apparatus enables a focusing lens to move in an optical axis direction while obtains a plurality of image data, adjusts a focus according to theabove image data to focus a or a plurality of point light sources, wherein the above imaging apparatus has a brightness value detection unit for detecting the brightness values of the pixels in a specified evaluation area according to the image data; an evaluation value calculation unit for calculating a high brightness evaluation value Ymax according to the brightness values; a symmetry calculation unit for calculating the symmetry Ymax_sym that the high brightness evaluation value moves relative to the focusing lens; and a control unit for adjusting the focus according to an extreme value calculated based on the above symmetry.

Imaging apparatus, focus adjustment method and recording medium

An autofocus apparatus includes a control unit configured to set an offset amount based on information relating to a shape of a first high-frequency component of an image signal obtained by photoelectrically converting an object image formed by an image pickup optical system that includes a focus lens while driving the focus lens, and to move the focus lens to a position that shifts from a first position of the focus position by a sum of the offset amount and a predetermined amount that is determined by characteristic information of the image pickup optical system.

Autofocus apparatus and optical apparatus

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Autofocus apparatus and optical apparatus