Sekonic Studio Deluxe L-28 C2 - M O D E R N L I G H T I N G C O N T R O

5-5. Modern
Lighting
Control
The
Sekonic
studio
Detuxe
a ilows
f
ull.lighting
control
and
is
therefore
the
most
efficient
and
accurale
meter
for
indoor
movies.
Here
6re
the
steps
recommended
to
arrange
a
studio
for
a
motion
picture
scene.
The
sa
me
general
procedure
may
be
followed
for
still
photography.
Required
lighting:
Film
Index
ASA
16
(DtN
13)
Lens
Diaphragm
t12.8
Shutter
Speed
LISO
second
Fra
mes
Z$-per-second
Step
1-
Finding
general
light
intensity
(a)
Set
Sekonic
Studio
Detuxe
to
ASA L6
(b)
Bring
the
red
24
on
meter's
cine
Scate in
line
with
t
12.8
on
the
Aperture
Sca
te
(c)
Locate
the
"L"
m
ark.
The
corresponding
foot-
ca
ndle
reading
should
be slighily
over
5oo.
(650
foot-ca
n
dles
a
re
req
u
ired
for
these
spe-
cified
conditions).
Step
2-Setting
the key
(or
main)
light
(a)
Switch
on
main
light
and
direct
it
as
desired
towards
the
subject.
(b)
Hold
the
meter
at
the
subject
position
and
point
the
Lu
m
ishere
at
the lens
of
the
ca mera.
Do
not
use
a slide.
press
the
needre
lock
button
until
Step 3.
(c)
Increase
or
decrease
the
intensity
of
the
main
light
until
the indicating
needle
points
to
5oo.
(The
fill-in
lights,
when
added,
wilr increase
the
foot-candle
number
to
the
required
650.)
Step 3
"
Adjusting
lighting contrast
(a)
Replace
Lumisphere
with Lumidisk.
(b)
Measure
intensity
of key
light. lt
should measure
5OO
foot-ca
ndles.
(c)
Switch
on
fill-in
lights.
(d)
Adjust
the fill-in lights
for
proper
lighting
con-
trast
as explained
in
5-2. Back
lights will
have
a negligible ef fect on th
is
ratio.
Note: For
a 2 to 1
ratio, f ill-in lights
should
registor
an
intensity
of 250.
Step
4
-
Ad
justing
brightness ra
nge
(a)
Replace Lumidisk
with
Lumisphere
(b)
Take
a foot-candle
reading with the Lumisphere
at subject
position pointed
towards the
cam era.
The
reading should be
650
now
with
all
the
lights
on. lf
not,
vary
the
key
light intensity
until
it
does. This
should require a minimum
of
a
djustment.
(c)
Turn
ttL"
mark to
650
foot-candles
and
read
out
the
foot-candle
number corresponding
to
the
"H"
mark.
(See
5-4-2
for
explanation).
lt
will read 20, which
is
the
mid-point
brightness
of
the subject.
Since a brightness
range of L6
to L
gives
the
best
results,
no
object should be
brighter
than 80
foot-candles
(4x
the
mid-point
20)
or darker
than 5
(Il4
of
2O).
(d)
Replace Lumisphere
with Lumigrid. Measure
light
and dark areas of
the subject to
be sure
none
of them is
brighter th a
n
80 or
darker
than 5.
Step 5
-
Finding
correct
exposure
(a)
The
reading
obta,ined with the Lumisphere in
Step
4
(b)'should
now
be completely
accurate.
It
shou
ld tell
you
to
set
your
ca
mera
at
t
12.8
at Il50 second.
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37