Infrared photography, Film plane mark (17) – Canon L2 User Manual
Page 26
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-ji.
On
the
Depth-of-Field
Scale
(2)
ot
some
Canon
Lenses
is
the
letter
“R”.
This
is
for
infrared
film.
When
using
this
type
of
film,
focus
in
the
normal
way.
Read
off
the
distance
of
the
object
you
are
photographing
as
shown
opposite
the
Distance
Indicator
Mark
on
the
Lens
Distance
Scale
(3).
Turn
the
lens
barrel
until
the
distance
read
off
is
opposite
the
“R”
mark.
Your
lens is now foused for infrared photograph.
Be sure you always use a proper filter for infrared photography.
Film Plane Mark (17)
This
line
gives
you
the
exact
position
of
the
film
plane
in
your
camera.
This
information
is
needed
for
very
accurate
close
distance
photography
where
film-to-subject
measurement
must be taken.
llippir............''
INFRARED PHOTOGRAPHY
14