Example 1. A method to identify a focal object in a field of view, the method including: dividing a field of view into a plurality of zones; identifying a focal sector occupying a subset of the plurality of zones; analyzing each zone of the plurality of zones within the focal sector to identify a first prospective focal object and to identify a second prospective focal object; determining a size of the first prospective focal object in the field of view and determining a size of the second prospective focal object in the field of view; selecting a final focal object from the first prospective focal object and the second prospective focal object by comparing the size of the first prospective focal object with the size of the second prospective focal object; and focusing a lens of a camera depending on the final focal object.

Example 2. The method of Example 1, further wherein, the focal sector is identified based on user input.

Example 3. The method of Example 1 or Example 2, wherein the focal sector is identified based on a predetermined parameter.

Example 4. The method of Example 1 to Example 3, wherein the size of the first prospective focal object is determined by analyzing each zone of the plurality of zones and counting a first number of zones where the first prospective focal object is present and wherein the size of the second prospective focal object is determined by analyzing each zone of the plurality of zones and counting a second number of zones where the second prospective focal object is present.

Example 5. The method of Example 1 to Example 4, further including sampling the field of view with a Time of Flight system to generate a photon count for each zone of the plurality of zones and wherein the final focal object is located at a final-focal-object distance from the Time of Flight system.