FOCUS HUNTING

CHALLENGE:

Your macro or telephoto lens fails to achieve focus and repeatedly hunts for the correct focus position, moving the lens elements back and forth. This is especially common when focusing on far objects following near subjects, or vice versa.

SOLUTION:

Check that your lens’s focus limit switch is not locked on a specific focus range, which will prevent the lens from focusing on both near and far distances. Conversely, when focusing at close distances, try using focus limit to narrow the possible movement of the lens elements.