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

A method of controlling an image pickup apparatus comprising:

• an exposure period setting step of adjusting 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 step of controlling a rate for reading the signal by the image pickup element;
• a generating step of generating an image based on the signal read by the image pickup element, for each frame;
• a detecting step of detecting an image of which has a band-like gap in brightness from among the images generated in said generating step;
• a setting step of setting a mode for the image pickup apparatus;
• wherein the rate is changed in said control step in accordance with the exposure period set in said exposure period setting step, in the case where the mode set in said setting step is a compensating mode for compensating the band-like gap in brightness in the image of the frame detected in said detecting step.

A non-transitory computer-readable storage medium having stored therein a program for causing a computer to implement a method of controlling an image pickup apparatus, the method comprising:

• an exposure period setting step of adjusting 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 step of controlling a rate for reading the signal by the image pickup element;
• a generating step of generating an image based on the signal read by the image pickup element, for each frame;
• a detecting step of detecting an image of which has a band-like gap in brightness from among the images generated in said generating step;
• a setting step of setting a mode for the image pickup apparatus;
• wherein the rate is changed in said control step in accordance with the exposure period set in said exposure period setting step, in the case where the mode set in said setting step is a compensating mode for compensating the band-like gap in brightness in the image of the frame detected in said detecting step.