1. A method for controlling a focus operation for an image-capturing device, the method comprising: receiving a focus instruction, wherein the focus instruction describes an object of focus; sending first context data to an external system; in response to sending first context data to the external system, receiving second context data from the external system, wherein the second context data comprises data associated with the object of focus; identifying the object of focus based on the received second context data; and determining a focus distance based on the identified object.