Image pickup apparatus and method of controlling the same, and storage medium

摘要

An image pickup apparatus that can change a shutter speed while performing flash band compensation. Signal is read by an image pickup element capable of reading at a rate higher than a frame rate at which the moving image is output to an external device. An image is generated from a signal output from the image pickup element, for each frame. A frame the image of which has a band-like gap in brightness is detected from among the generated frames. A full flash image is generated from images of a plurality of the detected frames. When an accumulating time of a signal in the image pickup element is changed, a frame rate at which signals are read from the image pickup element is changed to substantially match a reciprocal number of the changed accumulating time. When the band-like gap in brightness is detected, the images of the generated frames are output after replacing the images of the plurality of the frames with the created full flash image and images of the other frames with no band-like gap in brightness.

主权项

1. An image pickup apparatus comprising:
an exposure period setting unit configured to adjust start and end timings for accumulating electric charge at an image pickup element on unit area basis to set an exposure period of each unit area thereof; a control unit configured to control a rate for reading the signal by said image pickup element; a generating unit configured to generate an image based on the signal read by the image pickup element, for each frame; a detecting unit configured to detect an image of which has a band-like gap in brightness from among the images generated by said generating unit; a setting unit configured to set a mode for the image pickup apparatus; wherein said control unit is configured to change the rate in accordance with the exposure period set by said exposure period setting unit, in the case where the mode set by said setting unit is a compensating mode for compensating the band-like gap in brightness in the image of the frame detected by said detecting unit.