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Distance Scale
-
Indicator
(central
orange
line)
-
Infrared Index
"R"
i
Distance Scale
Infrared Index
"
R
"
The distance scale indicates the distance be-
For infrared photography, correction
of the
tween the focused subject and the film plane.
distance scale is necessary because the focal
The scale
is
necessary for checking the depth.
position deviates a little from ordinary photog.
of.field,
for infrared photography and flash
raphy.
Make ordinary
focusing first, then
photography.
adjust that distance scale to the infrared mark
,
~h~ correct position
of the scale,
where the
''
R".
For instance, if the distance reads 10m
distance
is
a one.digit figure,
is in
the middle
after focusing, merely shift the 1 0 scale to
of the figure; if it is a two-digit figure, it is
"
'"
position.
between the two figures ; and if it is a three.
*The position of " R " is scaled according to the
digit figure, it i s in the middle of the central
use of the standard of a film with the highest
figure.
sensitivity of a wave length of about 800mp
and infrared filter (for example. KODAK IR 135
32
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