Filter
Top Products
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
ABCOEFGHI
JKlA
Diagram 2
Azimuth
A
t
+r.-
......
~
__
~;--\-r
Max,adeQuate
snift
G
Picture area
when the lens
is
not shifted
11