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NIKON FILTERS
Nikon
filters are
supp
lied
either in
screw ·in
or
Series type mounts. Screw.
in filters are used with lenses from
28 mm through 135 mm
;
200
mm and
300 mm.
Series filters
<'Ire used
with
long focus
and zoom
lenses
,
whiCh
are furnished
with screw
·in lens hoods.
When the hood is not used, the filter
can
be attached to these lenses by
means of
an adapter
ring and insert
ring
.
Filters reduce
the
amount
of
light
transmitted
;
therefore an increase
in
exposure
is
necessary
when
using
them
.
This increase is
expressed as
a factor
.
Thu
s,
a filter
with a factor
2
means that
double
the normal
ex
.
posure
is required
;
e.g
.
use
1/30
in
·
stead of 1
/60 sec.
or
change
the aper
·
ture from
,
say, F/8
to
F/5.6
Correct
filter factors also depend upon
color
of lighting and color
se
nsitivity of fllm
used
.
E
C
.
:c
~
~
~
u
.
1ii
~
E
~ .~
-g.2
1
8
.
~
-g
1ii
•
Type
Ught
Yellow
Medium
Deep
Orange
Red
Green
light
Deep
Ultra
-violet
Polarizing
Neutral Den sity
Skylight
Amber
li ght
Deep
light
Blue
Medium
Deep
Designation
Y 43, Y 44.
Y
45
Y 47
,
Y
48,
Y
49
Y51
,
Y52, Y53
055, 056, 057
R59,
R60
,
R61
XO
Xl
L
38,
L
39,
L 40
Polar
NO
4
x
NO
8
x
NO
lO
x
N0400
x
LlA
A 2
Al2
8
2
8
8
812
Ni/dco,mat
Exposure factor
Equivalent to
Dayli ght
Tungs
ten
Wratten
light
1.5
1.5
K I
1.7
1.2
K
2
2
1.5
K3
3
2.5
23A
6
A
2
1.7
Xl
-
2
X2
1
2
A,
28
,
2C
2-4
Polar
'
4
8
NO
10
400
1
1A
1.2
81A
2
85
1.2
82A
1.6
82C
.
2 .2
828
25
VI
'"
w
>-
:!
"-
o
o
o
:r
VI
z
w
..J
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