Table of Contents
Advertisement
FOCUS------------------------------~
The Nikon F3AF features
a
through-the-Iens
autofocus system
which
takes the
guesswork out of focusing
:
just point the
camera
at what you want
to photograph
,
depress
the shutter
release
button
@
halfway, and
watch the
subject
literally 3nap
into sharp
focus
... automatically.
The
system consists
of three parts
:
the
special
F3AF
camera
body,
the AF Finder
DX-1,
and an
AF-Nikkor
lens,
either the
80mm 1/2.8
or the 200mm
1/3.5
IF-ED
.
The AF Finder DX-1
is
interchangeable
and covers
approx.
92
%
of the
image
area of
the
actual
photograph, meaning that the
final
photograph
will
be
larger
than the image seen in
the
viewfinder.
The
focusing
screen
is
built
into the bottom of
the
viewfinder and cannot be
interchanged
. However,
when
other Nikon F3 interchangeable
viewfinders are
used
with
the
F3AF,
you
have
a
choice
of 20
interchangeable focusing
screens (refer to
page
55).
Nikon
's autofocus system is
unique
in that it features exception-
ally quick response
,
allowing you to keep
up
with active, fast-
moving
subjects.
The Nikon F3AF offers
you
three different ways
of
focusing:
1)
autofocus, 2)
focus -aid
operation (using
the focus indicators
inside
the
finder), or
3)
manual
focus
(using the matte
portion
of
the focusing
screen).
As
shown
in
the following table
, however,
only AF-Nikkor lenses
are
usable for
autofocus.
With other lenses
having maximum
apertures
of
1/3.5
and faster, you can use the
focus
indicators as a guide
in focusing as
you
manually
rotate
the lens
focusing
ring (
Note:
Because
of
the
cropping
which
occurs
in
the
case of
mounted
slides
or regular snapshot-size
prints,
the actual picture might come out
slightly smaller than the image seen in the viewfinder.
20
Usable Lenses
Focusing method
Lens
Autofocus
AF-Nikkor 80mm
f/2
.8,
AF-Nikkor
200mm
f/
3.5
IF-EO
Focus -aid operation
Nikkor
(including
AF-Nikkorl
and
Nikon
Series
E lenses
with a
maximum
aperture
of
f/3 .5
or faster
Manual focus
Nikkor
(including
AF-Nikkor)
and
Nikon
Series
Elenses
Notes:
1)
Even with lenses
slower than
fI3.5,
the focus
indicators
willligM up
when the shutter release button
is
depressed
halfway.
This
indication,
however,
is not
reliable.
2)
Although the following Nikkor lenses have
a
maximum
aperture of
f13.5
or
faster,
they cannot
be
used
for focus-aid
operation:
16mm
fI3.5,
20mm
fI3.5,
28mm fI3.5,
135mm
fI3.5,
Micro
55mm
fI3.5,
PC
28mm
fI3.5,
PC
35mm
fI2.8,
and
PC
35mm fI3.5;
the Micro-Nikkor
55mm
f12.8 cannot
be
used at
closer
than
280mm;
the
Zoom
-Nikkor
35-
105mm
fI3.5-fI4.5
can
be used
only
at
35mm zoom
setting.
3) When the Nikon Teleconverter
TC-14,
200 or
300 is attached
to the lens
and
it
makes
the
lens' effective aperture
slower
than
fI3.5,
the
camera's
autofocus and focus
-aid operation cannot
be
used.
4) The following lenses
cannot be
mounted
on
the F3AF
with the OX-1
Finder:
.
Nikkor 13mm fI5.6, Reflex-Nikkor
500mm
f18, and
Reflex-
Nikkor 1000mm fill
.
5) Certain filters
cannot
be used for
autofocusl
focus-aid
operation.
(For
details,
please
refer to
page
64)
Advertisement
Table of Contents
