An electronic device includes a camera, a memory storing first unit information and second unit information to be used to move a lens driving part, and a processor. The first unit information is configured such that the camera causes a first focus sharpness variation and the second unit information is configured such that the camera causes a second focus sharpness variation. The processor is configured to receive a signal for adjusting a focus associated with an external object by using the camera, to verify a state of the electronic device associated with the reception of the signal, to select corresponding unit information among the first unit information and the second unit information, based at least partly on the state, and to move the lens driving part depending on the corresponding unit information to adjust the focus associated with the external object.