Nikon F55 Instruction Manual - Page 24

Focus Mode Two focus modes, autofocus using the Auto-Servo AF (Single Servo AF and Continuous Servo AF) and Manual focus, are available with this camera. • Autofocus • With the focus mode selector set to AF, lightly pressing the shutter release button automatically focuses the camera on the subject at the focus area (page 9/48) and causes / to appear in the viewfinder. • Auto-Servo AF Camera automatically chooses Single Servo AF or Continuous Servo AF operation according to the subject status, i.e. stationary or moving. • Single Servo AF Automatically activated when shooting a stationary subject. The shutter can be released when the focus indicator / appears in the viewfinder. Once focused on a subject, keeping the shutter release button lightly pressed locks focus (Focus Lock, page 52). However, if the subject starts moving, Focus Lock is deactivated, and the focus mode automatically switches to Continuous Servo AF. • Continuous Servo AF Continuous Servo AF is automatically activated when the subject is moving. The shutter can be released when the focus indicator / appears in the viewfinder; however, focus is not locked and the camera continues to focus on the subject until shutter release. With a moving subject, Focus Tracking (page 108) is activated and the camera continuously focuses on the subject. Also, F55/F55D will continue to focus firmly on a main subject with Lock-On™. • When g Sports Continuous mode is selected, Continuous Servo AF is automatically activated and the camera continuously focuses on the subject. About Lock-On™ Lock-On™ Autofocus keeps focus firmly on a main subject even if some other object momentarily blocks it in the viewfinder. 46 • Manual focus • Set the focus mode selector to M. Look through the viewfinder and rotate the lens focusing ring until the image appears sharp on the clear matte field in the viewfinder. The shutter can be released whether or not the subject is in focus and regardless of the focus indicator status. • Use Manual focus in situations where autofocus may not work as expected (page 27) or with lenses which do not allow autofocus operation when attached to the F55/F55D (page 88). • When using a lens with the A-M select function, set the switch/ring to M to focus manually. If M/A (autofocus with manual priority) is available with your lens, Manual focus is possible either with the switch/ring set to M or M/A. See the instruction manual of your lens for details. Manual focus using Electronic Rangefinder Set the focus mode selector to M. The focus can be confirmed with / indication in the viewfinder. The Electronic Rangefinder works with most Nikkor lenses (including AF Nikkors when operated manually) having a maximum aperture of f/5.6 or faster. Lightly press the shutter release button and while the meter is on, rotate the lens focusing ring until / appears in the viewfinder. The shutter can be released anytime. The Electronic Rangefinder can be activated with any of three focus brackets selected as the focus area (page 9/49). 47 FOCUS OPERATION