Nikon Camera F3AF - Manual (Page 32)

function well with the particular subject or shooting situation
(please refer to page 26 for further details).
Notes:
1) After taking a picture during autofocus operation, the tens witi continue
to focus for 16 sec. after you remove pressure from the shutter retease
button. To stop the tens movement at any time to conserve battery
power, slide the A M switch to M. Immediately lens movement stops,
but the red arrow(s) or red X remain on for 16 sec. until switched off
automatically.
2) While shooting fast-moving subjects, one or both of the red arrows
may blink to show that the image is quite close to the in-focus zone:
for ordinary snapshots, taking the shot even in this situation can pro­
duce satisfactory results. However, if sharp focus is mandatory, wait
until both red arrows light up continuously.
3) When the batteries in the viewfinder are nearly exhausted, autofocus
becomes slow or may even stop, even though the red arrowis) or red X
remain lit. In this case, replace the batteries in the finder at your earliest
convenience, or set the A-M switch to M and turn the focusing ring
manually using the red arrows as a guide.