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Message: <blockquote data-quote="Eye-level" data-source="post: 51589" data-attributes="member: 6548">Yes...it is the hyperfocal distance which is defined as follows - When a camera is set on infinity, DOF extends from infinity to a point closer to the camera.  The distance from the camera to this point is called the hyperfocal distance.  Because DOF extends in front of and behind a point focused on, the camera can be refocused for this hyperfocal distance whereupon DOF will extend from half the hyperfocal distance to infinity...that means you maximize your DOF which is crucial to a good landscape shot.  I've never really learned to use it on any camera I've had but my film cameras have a DOF preview button and I suppose it has something to do with helping to find the hyperfocal point but I am not sure.</blockquote>