Nikon 1768 Instruction Manual - Page 35

Autofocus

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AUTOFOCUS The Nikon N90 has two autofocus modes, Single Servo AF with Focus-Priority and Continuous Servo AF with Release-Priority. In either autofocus mode and in any film advance mode, Focus Tracking automatically activates when the subject starts moving. Focus Tracking enables the camera to analyze the speed of the moving subject according to the focus data detected, and to obtain correct focus by anticipating the subject's position-and driving the lens to that position-at the exact moment of exposure. You can thus obtain correctly focused pictures for many moving subjects. Data Link System users You can give Focus-Priority to Continuous Servo AF and/or Release-Priority to Single Servo AF. For Single Servo AF in continuous shooting, you can also cancel focus detection and lens driving for the next shot after the first shot is taken so that the subject focus remains locked. For details, see the Nikon AC-1 E card's instruction manual. Caution Do not attempt to tum the lens focusing ring or impede its rotation when the focus mode selector is set to S or C. In addition to AF Nikkor lenses (including D-type AF Nikkor and AF-I Nikkor lenses except the AF Nikkor lenses for F3AF), autofocus is possible with AF Teleconverter TC16A attached to non-AF AI-Nikkor lenses with a maximum aperture of f!3.5 or brighter. AI -Nikkor lenses that cannot be used with the TC-16A are: • AI-S type 20mm 1/2.8 • AI-S type ED 400mm 1/2.8 IF • AI-S type ED 400mm 1/3.5 IF • 28mm 1/2 (with lactory serial No. 540020 or smaller) • 28mm 1/2.8 (No. 500000 or smaller) • 35mm 1/1.4 • 35mm 1/2 (No. 931000 or smaller) • 35mm 1/2.8 (No. 880000 or smaller) • 50mm 111 .4 (No. 398000 or smaller) • 50mm 1/2 (No. 364000 or smaller) • ED 400mm 1/3.5 IF • Micro 55mm 1/3.5 • All modified-AI-Nikkor and PC-Nikkkor lenses For details, see the TC-16A 's instruction manual. 35

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AUTOFOCUS
The Nikon
N90
has
two
autofocus
modes
, Single Servo AF with
Focus-Priority and Continuous Servo AF with Release-Priority.
In
either autofocus
mode
and
in
any film advance mode, Focus
Tracking automatically activates when the subject starts
moving. Focus Tracking enables the camera to analyze the
speed
of
the moving subject according
to
the focus
data
detected, and
to
obtain correct focus by anticipating the
subject's
position-and
driving the lens
to
that
position-at
the
exact
moment
of
exposure. You can thus obtain correctly
focused pictures for many moving subjects.
Data Link System users
You can give Focus-Priority
to
Continuous Servo AF
and/or
Release-Priority
to
Single Servo AF.
For Single Servo AF
in
continuous shooting, you can also
cancel focus detection and lens driving for the next shot
after
the
first shot is taken so that the subject focus
remains locked.
For details, see the Nikon AC-1 E
card's
instruction
manual.
Caution
Do
not
attempt
to
tum
the lens focusing ring
or
impede its
rotation when the focus
mode
selector is set
to
S
or
C.
In
addition
to
AF Nikkor lenses (including D-type AF
Nikkor and AF-I Nikkor lenses except the AF Nikkor lenses
for F3AF), autofocus
is
possible with AF Teleconverter TC-
16A
attached
to
non-AF AI-Nikkor lenses with a maximum
aperture
of
f!3.5
or brighter.
AI
-Nikkor lenses that cannot
be
used with the
TC-16A
are:
•
AI-S
type
20mm
1/2
.8
•
AI-S
type
ED
400mm
1/2.8
IF
•
AI-S
type
ED
400mm
1/3.5
IF
•
28mm
1/2
(with
lactory
serial
No.
540020 or
smaller)
•
28mm
1/2.8
(N
o.
500000 or
smaller)
•
35mm
1/1.4
•
35mm
1/2
(No.
931000
or
smaller)
•
35mm
1/2.8
(
No
.
880000
or
smaller)
•
50mm
111
.4
(N
o.
398000
or
smaller)
•
50mm
1/2
(No.
364000
or
smalle
r)
•
ED
400mm
1/3.5
IF
•
Micro
55mm
1/3.5
•
All
modified-AI-Nikkor
and
PC
-Nikkkor
len
ses
For details,
see
the TC-16A
's
instruction manual.
35