An electronic device and a control method thereof are provided. The control method of an electronic device includes the steps of when a user command for initiating video recording is received, transmitting, to an external device connected to the electronic device, a first signal including a request for initiating video recording, acquiring a first image according to the user command, acquiring a first score for composition of the first image by using a trained neural network model, when a second signal including a second score for composition of a second image acquired by the external device is received according to the first signal, identifying, from the second image, at least one merging section to be merged into the first image, on the basis of the first score and the second score, transmitting, to the external device, a third signal including a request for image data corresponding to the at least one merging section, and when a fourth signal including the image data is received according to the third signal, acquiring a third image by merging an image corresponding to the at least one merging section into the first image on the basis of the image data.