Electronic device and recording method thereof

An electronic device comprising:

• a display;
• an image sensor configured to acquire an image;
• a processor configured to be operatively connected to the display and the image sensor;
• and
• a memory configured to be operatively connected to the processor,
• wherein the memory is further configured to store instructions that, when executed, cause the processor to:
• control the image sensor to acquire a first image at a first frame rate,
• detect whether a super-slow recording function is activated,
• in response to the super-slow recording function being activated, control the display to display a visual indicator corresponding to a motion detection area on a preview screen, wherein the motion detection area is a partial area of the preview screen, corresponds to a predesignated position of the preview screen, and has a predesignated size,
• determine whether a motion is detected within the motion detection area based on whether an image of the motion detection area is changed,
• in response to detecting the motion within the motion detection area, control the image sensor to acquire a second image at a second frame rate faster than the first frame rate,
• track a moving path of an object,
• calculate an expected moving path for a time for which super-slow recording is available again based on a tracking result, and
• move the motion detection area along with the expected moving path.