Nikon PC Nikkor 35mm f/2.8 Gebrauchsanweisung - Seite 11
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Maximum Permissible Shift
Depending
on
the direction
of shift,
however,
there
is
a
maximum permissible shift, beyond which distortion
and/or vignetting
may
occur
in the picture
corners,
because
the film format
is rectangular while image
area
produced by the lens is
circular.
The
amount of
maxi-
mum permissible
shift (7,
8
or
11)
is
indicated in
millimeters
at each click-stop
on the lens barrel. The
diagrams
at
right
show
the limits based
on the
direc-
tion
of
shift.
Note: When
you
use a Nikon polarizing filter in combination
with
a
lens
hood, vignetting will occur even at
the
maximum
permissible amount of shift at each click-stop.
Diagram 1
Ii
ntttmttt11
A B C O E F G H I
J K l A
Diagram
2
Azimuth
A
t
+r.-......
~
__
~;--\-r
Max,adeQuate
snift
G
Picture
area
when the
lens
is
not
shifted
11