Electronic apparatus and controlling method thereof

An electronic apparatus comprising:

• a first camera including a first angle of view;
• a second camera including a second angle of view;
• a display;
• an input device configured to obtain a ratio that is set based on a user input;
• and
• at least one processor, wherein, when the ratio is within a first specified range, the at least one processor is configured to set the first camera to a first frame rate, set the second camera to a second frame rate, which is slower than the first frame rate, and control the display to display a first image, which is obtained at the first frame rate by using the first camera,
• wherein, when the ratio is within a second specified range, the at least one processor is further configured to set the second camera to a third frame rate, set the first camera to a fourth frame rate, which is slower than the third frame rate, and control the display to display a second image, which is obtained at the third frame rate by using the second camera, and
• wherein the at least one processor is further configured to:
• control the second camera to enter a sleep mode or a standby mode before the ratio is adjusted through the input device, and
• when the ratio is adjusted, control the second camera to wake up.