Miranda MS-1 SUPER - Infrared Photography; Infrared Ray Mark

16. INFRARED
RAY
MARK
The
short
red
line
on
one side
of
the datum
mark
is
the
inf ra-red
ray
mark, which
is
used
to
correct
the
focusing
when
using
infra-red
film
and
filters.
The
inf
ra-red
ray has a
longer wave
length than
the
visible
light range,
therefore,
the
focusing is
displaced
being
indicated by
a short
red
line.
Inf
rared
Photography
1. Focus the
lens
using
the
red
line.
2.
Attach rn
inf rared
f
ilter to
the
camera.
3.
Set
the
exposure
according
to the
description
on
the
f
ilm
and
release
the
shutter.
It
is impossible
to
f
ocus
the camera
with
the inf
ra-
red
f
ilter
in
position.
Either focus with the
filter
removed and
then
replace
it
or use
the
distance
scale.
Fis.28
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