FOCUS LOCK (WITH AN F4-SERIES, F90X/N90s, F90-SERIES/N90 OR
F70-SERIES/N70 CAMERA)
When shooting a subject that is off-center or moving in Continuous Servo Autofocus mode,
press this button to lock focus. To cancel focus lock and reactivate autofocus, remove your
finger from the focus lock button. Although AF-Lock function can be set on both camera and
lens,
priority is given to whichever is set first.
FOCUSING LIMIT SWITCH (WITH AN F4-SERIES, F90X/N90s, F90-
SERIES/N90 OR F70-SERIES/N70 CAMERA)
With autofocus operation, you can reduce focusing time by setting the focusing limit switch
according to the pre-determined distance range for the subject(s). There are three focusing limit
zones provided:
Close distance — infinity H Set switch to front setting (FULL)
Close distance — 12m Set switch to middle setting (12 — 6m)
12m — infinity (°°) Set switch to rear setting (°° — 12m)
RECOMMENDED FOCUSING SCREEN
Various interchangeable focusing screens are available for Nikon cameras to suit any type of lens
or picture-taking situation. Those which are recommended for use with your lens are listed.
""***• _ Screen
Camera ^~- __
F4 (with DP-20)
F4 (with DA-20)
F3*
A/L
©
B
©
©
c
0
o
(-1)
©
D
©
E
©
©
(+1B
©
F
©
o
(-1)
Gl
G2
G3
©
©
i l
o
G4
o
o
i-2
i
o
III
H2
H3
114
o
J
©
©
©
K/P
©
©
+ 1/3)
©
M R
©
T
©
U
©
«-V!)
©
©
®=Excellent focusing
0=Acceptable focusing
Slight vignetting or moire phenomenon affects screen image, but film image shows no
traces of this.
•= Exposure measurement is not possible; lens/screen combination permits focusing operation
only.
(
)=
Indicates degree of exposure compensation needed for F4-series cameras (Center-
Weighted metering only). For F4-series cameras, compensate using the Exposure
Compensation Dial for the focusing screen. (See the F4/F4s instruction manual, page 78.)
*For F3-Series cameras, exposure compensation is not necessary.
Blank box means not applicable. Since type M screen can be used for both macrophotography
at a 1:1 magnification ratio and for photomicrography, it has different applications than other
screens.
For the K2, B2 and E2 focusing screens, refer to the columns on the K, B and E screens,
respectively. For details, also refer to the specific camera's instruction manual.
MINIMUM APERTURE LOCK Illust. A
For programmed auto or shutter-priority auto shooting, use the minimum aperture lock lever to
lock the lens aperture at f/22.
1.
Set the lens to its minimum aperture (f/22).
2.
Slide lock lever in the direction of the aperture ring and so the white dot on the lever aligns
with the orange dot. (See illust.)
To release the lock, slide the lever in reverse direction.
14
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