Nikon AI-S Zoom-NIKKOR 35-105mm f-3.5-4.5 - Manual (Page 14)

0= Excellent focusing
9= Acceptable focusing
The split-image rangefinder, microprism or cross-hair
area is dim.
Focus on the surrounding matte area,
0
=
Acceptable focusing
Slight vignetting (or moire phenomenon, in the case of
the microprism) affects the screen image. The image on
the film, however, shows no trace of this.
Blank means inapplicable.
Note: The Teleconveners TC-30I, TC-300, TC-I4B and
TC-14 cannot be attached to this lens.
-FG VARIABLE APERTURE-
As the lens is zoomed from 35mm to 105mm, the aperture
decreases approx. 2/3 of an f/stop. This variation is indicated
by two aperture indexes engraved on the chrome mounting
ring: the green index is for use with the lens at the 35mm
setting, while the brown one is for the 105mm setting. For
intermediate focal length settings, align the aperture ring
between the green and brown aperture indexes. Referring
to Diagram 1, the maximum aperture changes from f/3.5 at
the 35mm setting to f/4.5 at 105mm. When this zoom lens
is used with cameras having through-the-lens (TTL) meter­
ing, you can forget about adjusting the aperture. However,
when an independent exposure meter is used, slight adjust­
ment is required, depending on the focal length setting.
Diagram 1
(f3.8)
(f4,2)
50 70
----- I-ocal Length