Nikon D5600 Reference Manual - Page 211

A AF-P Lenses When an AF-P lens is used in manual focus mode, the in-focus indicator will flash in the viewfinder (or in live view, the focus point will flash in the monitor) to warn that continuing to rotate the focus ring in the current direction will not bring the subject into focus. A The Focal Plane Mark and Flange-Back Distance Focus distance is measured from the focal plane mark (E) on the camera body, which shows the position of the focal plane inside the camera (q). Use this mark when measuring the distance to your subject for manual focus or macro photography. The distance between the focal plane and the lens mounting flange is known as the "flange-back distance" (w). On this camera, the flangeback distance is 46.5 mm (1.83 in.). A Focus Peaking If focus peaking is enabled using Custom Setting d11 [Peaking highlights], objects that are in focus will be indicated by colored outlines that appear when focus is adjusted manually during live view. Note that peaking highlights may not be displayed if the camera is unable to detect outlines, in which case focus can be checked by zooming in on the view through the lens in the display. Shooting Settings 165