Nikon 300mm-f-4-IF-ED-AF-S-Nikkor - Manual (Page 14)

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Depth of Field
If your camera has a depth of field preview (stop-down) button or lever, depth of field
can be observed while looking through the camera viewfinder.
Minimum Aperture Lock (Fig. 3)
For programmed auto or shutter-priority auto exposure shooting, use the minimum
aperture lock lever to lock the lens aperture at f/32.
1 Set the lens to its minimum aperture (f/32) by aligning it with the aperture index.
2 Slide the lock lever toward the aperture ring, so the two orange dots are aligned.
To release the lock, slide the lever in the opposite direction.
Recommended Focusing Screens
Various interchangeable focusing screens are available for certain Nikon SLR
cameras to suit any picture-taking situation. The ones recommended for use with this
lens are:
◎ Excellent focusing
○ Acceptable focusing
Slight vignetting or moiré patterns appear in the viewfinder, but not on the film.
― Not available.
( ) Indicates degree of exposure compensation needed (Center-Weighted metering only).
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.
When using the B, B2, E, E2 and K2 focusing screens in cameras other than those listed above, refer to
the columns for the B, E and K screens.
Screen
Camera
F5+DP-30
◎
◎ ―
◎
―
―
―
―
―
―
― ◎ ―
― ◎ ―
― ―
― ―
― ―
◎
（+0.5）
―
◎
（+0.5）
―
― ― ◎ ― ◎ ―
G4 G3
G1
G2 H3
H4 H1
H2
B C D E
EC-B
EC-E
F J K L M P
R
S
T
U
F4+DP-20
F4+DA-20
F3
F5+DA-30
A
◎
◎
○
（+0.5）
○
（-1.0）
○
（-1.0）
○
（-1.0）
○
○
（+0.5）
○
○
○
（-1.5）
○
○
○
○
（+0.5）
○
（-1.0）
○
◎
◎
◎
◎
◎
―
―
―
―
◎
◎
◎
◎
◎
―
―
―
◎
◎
（+0.5）
◎
◎
◎
◎ ◎ ◎
◎
◎
（+0.5）
◎
◎
◎
◎
○ ○