Nikon F4S, F4 Body Only instruction manual Focus Modes, Manual Focus with Electronic Rangefinder

FOCUS MODES

The advanced autofocus system of the F4 works even under extremely low-light conditions - as low as EV minus 1. The Electronic Rangefinder operates for both autofocus and manual focusing. Manual focusing can also be accomplished using the clear matte screen or any optional screen with an optical rangefinder. Normally, the Electronic Rangefinder'sabil- ity to detect focus is superior to the human eye. However, there are certain subjects that cannot be focused upon in any way - such as shiny metallic subjects, blank walls, etc. In this case, X appears and autofocus with an alternate subject at the same distance or manual adjustment by estimating the distance is recommended.

Manual Focus with Electronic Rangefinder

Manual focus using the Electronic Rangefinder works with most Nikon lenses, including AF Nikkor when operated manually. (For a complete list of usable lenses, see lens compatibility chart, page 86.) Lenses with a maximum aperture slower than f/5.6 are not suitable for Electronic Rangefinder focusing, even though focus indicator LEDs appear. Focus using clear matte field or change focusing screen to J type.

1.Set focus mode selector to M (manual). If lens has an A-M switch, set to M.

2.Look inside viewfinder and position focus brackets on the main subject.

Lightly press shutter release button.

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