What is claimed is:1. An electronic device comprising:a display;a first camera;a processor; anda memory configured to store instructions, which when executed, instruct the processor to:acquire a plurality of first images and one or more second images through the first camera for a predetermined time, when an input associated with image acquisition is received, andin response to the received input associated with image acquisition, generate a plurality of image contents based on at least one of the plurality of first images or the one or more second images such that the plurality of image contents are outputted to different regions of the display, wherein the plurality of image contents include one or more moving images generated based on the plurality of first images and one or more still images generated based on the one or more second images.2. The electronic device of claim 1, further comprising a housing including a first surface and a second surface facing away from the first surface,wherein the display is exposed through the first surface of the housing, andwherein the first camera is configured to acquire the plurality of first images through the first surface or the second surface of the housing.3. The electronic device of claim 1, wherein the plurality of first images are acquired in a first cycle and have a first resolution, andwherein the one or more second images have a second resolution different from the first resolution.4. The electronic device of claim 1, further comprising a second camera,wherein the instructions, when executed, further instruct the processor to:acquire one or more third images through the second camera for the predetermined time, when the input associated with image acquisition is received,generate, in response to the received input associated with image acquisition, the plurality of image contents based on at least one of the plurality of first images, the one or more second images, or the one or more third images, andoutput the plurality of image contents to different regions of the display.5. The electronic device of claim 4, wherein the second camera is configured to acquire an image related to an external environment.6. The electronic device of claim 4, wherein the plurality of first images are acquired in a first cycle and have a first resolution,wherein the one or more second images have a second resolution different from the first resolution, andwherein the one or more third images have a third resolution different from the first resolution and the second resolution.7. The electronic device of claim 1, wherein the instructions, when executed, further instruct the processor to:select one or more first images based on a motion image of an external object included in the plurality of first images, andgenerate the one or more moving images based on the one or more first images.8. The electronic device of claim 1, wherein the instructions, when executed, further instruct the processor to:detect one or more first candidate images from among the one or more second images based on at least one of image quality of the one or more second images, brightness information of the one or more second images, a composition of an external object included in the one or more second images, or face recognition information detected from the one or more second images,detect one or more second candidate images by removing an overlapping image from among the one or more first candidate images,select an image effect to be applied to the one or more second candidate images based on scene information of the one or more candidate images, andgenerate the one or more image content including one or more still images by applying the selected image effect to the one or more second candidate images.9. The electronic device of claim 8, wherein the instructions, when executed, further instruct the processor to:detect scene information from the plurality of first images,detect one or more first images having time information that is identical to time information of the one or more second candidate images from among the plurality of first images, anddetermine the scene information detected from the plurality of first images as scene information of the one or more second candidate images.10. A method of operating an electronic device, the method comprising:acquiring a plurality of first images and one or more second images through a first camera of the electronic device for a predetermined time, when an input associated with image acquisition is received; andin response to the received input associated with image acquisition, generating a plurality of image contents based on at least one of the plurality of first images or the one or more second images such that the plurality of image contents are outputted to different regions of a display of the electronic device, wherein the plurality of image contents include one or more moving images generated based on the plurality of first images and one or more still images generated based on the one or more second images.11. The method of claim 10, wherein the plurality of first images are acquired in a first cycle and having a first resolution, andwherein the one or more second images have a second resolution different from the first resolution.12. The method of claim 10, further comprising acquiring one or more third images through a second camera for the predetermined time, when the input associated with image acquisition is received,wherein generating the plurality of image contents comprises generating the one or more image content based on at least one of the plurality of first images, the one or more second images, or the one or more third images.13. The method of claim 12, further comprising acquiring, via the second camera, an image related to an external environment.14. The method of claim 12, wherein the plurality of first images are acquired in a first cycle and have a first resolution,wherein the one or more second images have a second resolution different from the first resolution, andwherein the one or more third images have a third resolution different from the first resolution and the second resolution.15. The method of claim 10, wherein generating the one or more image content comprises:selecting one or more first images based on a motion image of an external object included in the plurality of first images; andgenerating the one or more moving images based on the one or more first images.16. The method of claim 10, wherein generating the one or more image content comprises:detecting one or more first candidate images from among the one or more second images;detecting one or more second candidate images by removing an overlapping image from among the one or more first candidate images;selecting an image effect to be applied to the one or more second candidate images based on scene information of the one or more candidate images; andgenerating one or more still images by applying the selected image effect to the one or more second candidate images.17. The method of claim 16, wherein detecting the one or more first candidate images comprises:detecting the one or more first candidate images based on at least one of image quality of the one or more second images, brightness information of the one or more second images, a composition of an external object included in the one or more second images, or face recognition information detected from the one or more second images.18. The method of claim 16, wherein the scene information of the one or more second candidate images is detected from the one or more first images that have time information identical to time information of the one or more second candidate images from among the plurality of first images.