An electronic device is provided. The electronic device includes a first camera configured to include a first image sensor, a second camera configured to include a second image sensor, and a processor. The processor allows a pixel array of the first image sensor to have a difference of a first exposure start timing in units of at least one row and obtains a first image based on a first exposure period and a first read-out speed using the first camera, allows a pixel array of the second image sensor to have a difference of a second exposure start timing in units of at least one row and obtains a plurality of second images based on a second exposure period and a second read-out speed using the second camera, and generates a third image by synthesizing at least some of the plurality of second images.