Nikon D7500 Users Manual - English for customers in Asia Oceania the Middle Ea - Page 136

D Using Autofocus in Live View Use an AF-S or AF-P lens. The desired results may not be achieved with other lenses or teleconverters. Note that in live view, autofocus is slower and the monitor may brighten or darken while the camera focuses. The focus point may sometimes be displayed in green when the camera is unable to focus. The camera may be unable to focus in the following situations: • The subject contains lines parallel to the long edge of the frame • The subject lacks contrast • The subject in the focus point contains areas of sharply contrasting brightness, or includes spot lighting or a neon sign or other light source that changes in brightness • Flicker or banding appears under fluorescent, mercury-vapor, sodium-vapor, or similar lighting • A cross (star) filter or other special filter is used • The subject appears smaller than the focus point • The subject is dominated by regular geometric patterns (e.g., blinds or a row of windows in a skyscraper) • The subject is moving A Focus-Point Selection Except in subject-tracking AF, pressing J during focus-point selection selects the center focus point. In subject-tracking AF, pressing J starts subject tracking instead. Manual focus-point selection is not available in auto-area AF. A See Also Viewfinder photography-For information on: • Choosing the number of focus points that can be selected using the multi selector, see A > Custom Setting a4 (Number of focus points, 0 260). • Choosing separate focus points for vertical and horizontal orientations, see A > Custom Setting a5 (Store points by orientation, 0 261). • Setting focus-point selection to "wrap around," see A > Custom Setting a7 (Focus point wrap-around, 0 261). Viewfinder photography/live view: For information on using the main command dial to choose the AF-area mode, see A > Custom Setting f3 (Customize command dials) > Change main/sub (0 266). 110