Electronic device and image capture method thereof

1. An electronic device comprising:

a housing;

a display exposed through a first surface of the housing;

a first camera exposed through a second surface of the housing, the second surface being opposite to the first surface;

a second camera exposed through the second surface;

a memory configured to store an image obtained by the first camera or the second camera; and

a processor electrically connected with the display, the first camera, the second camera, and the memory,

wherein the processor is configured to:

output a first image obtained by the first camera on the display, and

if an area recognized as a face in the first image has a size satisfying a specified condition, obtain a second image by zooming in on a subject corresponding to the area using the second camera which is different from the first camera and display the second image.

2. The electronic device of claim 1 ,

wherein the first image is a preview image or a moving image captured by the first camera, and

wherein the second image is a preview image or a moving image captured by the second camera.

3. The electronic device of claim 1 , wherein, if the area recognized as the face in the first image has the size satisfying the specified condition, the processor is further configured to concurrently output the first image on a first area of the display and the second image on a second area of the display.

4. The electronic device of claim 1 , wherein, if the area recognized as the face in the first image has the size satisfying the specified condition, the processor is further configured to output the first image on a first area of the display and the second image on a second area that is included in the first area.

5. The electronic device of claim 1 , wherein the second camera is configured to support optical zoom.

6. The electronic device of claim 1 ,

wherein the first camera includes a wide-angle lens, and

wherein the second camera includes a telephoto lens.

7. The electronic device of claim 1 , wherein, when the second image is obtained, the processor is further configured to zoom in on the face and a body of the subject using the second camera.

8. The electronic device of claim 1 , wherein the processor is further configured to:

if a plurality of faces are recognized in the first image, classify the plurality of faces into one or more groups based on a distance between the plurality of faces, and

obtain the second image having a group including a greatest number of faces among the one or more groups.

9. The electronic device of claim 1 , wherein the processor is further configured to:

if a plurality of faces are recognized in the first image, classify the plurality of faces into one or more groups based on a distance between the plurality of faces,

display, on the display, a guide to select one of the one or more groups, and

obtain the second image based on a group selected through the guide.

10. The electronic device of claim 1 , wherein the processor is further configured to:

process the first image,

process the second image differently from the first image, and

store the second image in the memory.

11. The electronic device of claim 1 , wherein the processor is further configured to display, on the display, a user interface for saving the first image, saving the second image, or saving the first image and the second image.

12. The electronic device of claim 1 , wherein the processor is further configured to display, on the display, a user interface for simultaneously saving the first image and the second image.

13. The electronic device of claim 1 , wherein the processor is further configured to display, on the display, a user interface for automatically outputting the second image on the display.

14. An image capture method of an electronic device including a first camera and a second camera, the image capture method comprising:

obtaining a first image using the first camera;

outputting the first image;

recognizing a face included in the first image;

if an area including the face in the first image has a size satisfying a specified condition, obtaining a second image by zooming in on a subject corresponding to the area using the second camera which is different from the first camera; and

outputting the second image.

15. An electronic device comprising:

a housing;

a display exposed through a first surface of the housing;

a first camera exposed through a second surface of the housing, the second surface being opposite to the first surface;

a second camera exposed through the second surface;

a memory configured to store an image obtained by the first camera or the second camera; and

a processor electrically connected with the display, the first camera, the second camera, and the memory,

wherein the processor is configured to:

output a first image obtained by the first camera on the display, and

if an area recognized as a moving subject in the first image has a size satisfying a specified condition, output a second image obtained by the second camera on the display.

16. The electronic device of claim 15 ,

wherein the first image is a preview image or a moving image captured by the first camera, and

wherein the second image is a preview image or a moving image captured by the second camera.

17. The electronic device of claim 15 , wherein the processor is further configured to automatically track the moving subject included in the first image.

18. The electronic device of claim 15 , wherein the processor is further configured to:

if two or more moving subjects are recognized in the first image based on the specified condition, display, on the display, a guide to select one of the two or more moving subjects; and

obtain the second image of a moving subject selected through the guide.

19. The electronic device of claim 15 , wherein, if the moving subject stops or is outside a field of view of the second camera, the processor is further configured to stop actuating of the second camera.