Sekonic STUDIO DELUXE? L-398A User manual

STUDIO DELUXE Ⅲ
L-398A
Operating Instructions

This manual uses the following safety labels for WARNING and
CAUTION that you must follow.
Indicates hazards or unsafe practices that can re-
sult in severe personal injury or death.
Indicates hazards or unsafe practices that can re-
sult in the personal injury or damage to your L-398A
exposure meter.
•Keep Lumisphere, Lumidisc, Lumigrid or High-
slide out of reach of young children, as swal-
lowing such objects can cause suffocation.
•Please place in a location where an infant can-
not reach and accidentally get the strap
wrapped around his or her neck. There is a
danger of strangulation.
•This L-398A has a powerful magnet. Do not
place it close to the following materials, other-
wise the data stored may be damaged or the
products may malfunction:
Cash cards, floppy disc, other magnetic cards,
TV Set, CRT display or LCD, and other appa-
ratus sensitive to magnetic fields.
SAFETY PRECAUTION
CAUTION
CAUTION
WARNING
WARNING

SAFETY PRECAUTION
CONTENTS
1. Features …………………………………………………… 1
2. Specifications ……………………………………………… 3
3. Part Designations …………………………………………… 4
4. Accessories ………………………………………………… 5
5. Basic Operation of Meter Unit …………………………… 6
1. Stopper Button Operation …………………………… 6
2. Zero Position Check and Adjustment ……………… 6
3. Memo Pointer Operation ……………………………… 7
6. Standard Accessory Operation …………………………… 8
Incident Light Measurement ……………………………… 8
1. Lumisphere …………………………………………… 8
2. Lumidisc …………………………………………… 11
Reflected Light Measurement ………………………… 12
1. Lumigrid ……………………………………………… 12
Other Operations ………………………………………… 14
1. Exposure Value (EV numbers) Readout ………… 14
2. Employing Cine Scale ……………………………… 14
3. Using Exposure Multipliers (-2, -1, +1, +2) ……… 15
7. Optional Accessories Operation ……………………… 16
1. Direct Reading Slides ……………………………… 16
2. Direct Reading Slide Application ………………… 17
8. Handling Cautions ……………………………………… 18
CONTENTS

1
Nearly all photographic subjects combine complex variations of
strongly reflecting surfaces (high reflectivity) and weakly reflecting
surfaces (low reflectivity). These variations delicately influence expo-
sure determination and to which portion the exposure is set becomes
a vital factor that considerably affects the appearance of the finished
photograph.
Although risk of failure can be minimized by taking maximum and
minimum readings of all portions of the subject, then averaging the
values, such an approach is both time consuming and tedious. The
Studio Deluxe Ⅲis the answer to this problem.
1. Optimum exposure meter for incident light measuring method (also
applicable for reflected light method.)
2. Freely rotatable light sensor section for very easily performed
measurements.
3. Meter stopper mechanism allows operation while hand is released
from meter.
4. Meter release mechanism is also included which allows the needle
to deflect freely. This provides greater convenience when deter-
mining light balance.
5. Memo pointer enables easier light balance setting.
6. Lumisphere detects the same light as strikes the subject. Since
subjects are normally 3-dimensional, according to the lighting con-
ditions, brighter surfaces (highlights) and darker surfaces (shad-
ows) are produced (illumination contrast). The Studio Deluxe Ⅲ
mechanism automatically takes into account the strength of light
from all directions, causing the meter to indicate a value appli-
cable to photography. It is thus most convenient for determining
typical exposures.
7. After combining film sensitivity and shutter speed, direct reading
slides (optional) can be used for directly determining the aperture
valve.
8. AMORPHOUS PHOTOSENSOR is employed as light sensing
element, eliminating need for battery.
9. Wide selection of available accessories allows numerous photo-
graphic techniques to be enjoyed.
1. FEATURES

2
2
11.4
051020
2.8
40 80
4
8
320
16
640
1.25K
5.6
INCIDENT
LIGHT
160
•Your L-398A has a powerful magnet. Do not
place your L-398A close to the following
materials, otherwise the data stored may
be damaged or the product may malfunc-
tion: Cash cards and other magnetic cards,
floppy disk, TV Set, CRT display, and other
apparatus sensitive to magnetic fields.
Caution:
AMORPHOUS PHOTOSENSOR
BACK LIGHT
MAIN LIGHT
LUMISPHERE
FILL-IN LIGHT
MAGNET
MICROAMMETER
1. FEATURES

3
Analog exposure meter for ambient light
Incident light and reflected light
Incident light: Lumisphere and Lumidisc
Reflected light: Lumigrid (30 deg. of light
receiving angle )
Incident light: EV4 to 17
Reflected light: EV9 to 17
ISO 6 to 12,000 (in 1/3 step)
60 sec. to 1/8000 sec. (in full step)
F0.7 to F128 (in 1/3 step)
8, 18, 24, 64, 128
EV1 to 20 (in 1/3 step)
Incident light: C=340 (Lumisphere),
C=250 (Lumidisc)
Reflected light: K=12.5
0℃to 40℃
-20℃to 60℃
112(H) ×58(W) ×34(D) mm
Approx. 190g
2. SPECIFICATIONS
Type
Light receiving method
Light receiving section
Measuring range
(ISO 100)
Film speed
Shutter speed
Aperture value
Cine speed (f/s)
EV (Exposure Value)
Calibration Constant
Operating temperature range
Storage temperature range
Dimensions
Weight
Note: Features and specifications are subject to change without notice.

4
5
1
0
2
0
4
0
8
0
1
6
0
3
2
0
6
4
0
1
.
2
5
k
-
2
-
1
+
1
+
2
-
2
-
1
+
1
+
2
0
･
･
1
1
･
･
1
2
E
V
S
t
u
d
i
o
D
e
l
u
x
e
Ⅲ
L-398A
1
.
2
5
k
6
4
0
3
2
0
1
6
0
8
0
4
0
2
0
1
0
5
0
2
28
4
56
8
11
16
11.4
60
30
15
8
4
2
1
2
8
15
30
60
125
250
500
1
k
1/SEC
8
k
4
k
4
2
k
100
50
200
ISO
8
18
24
64
128
CINE
128
90
64
45
32
22
16
11
8
5.6
2.8
4
2
1
0.7
F
1.4
H
3. PART DESIGNATIONS
Front
Rear
Footcandle scalee
EV scalet
Dial ring!6
Scale marki
Stopper button!3
Stopper
button mark!9
“H” marko
EV marky
Film sensitivity
selector knob@0
Memo
pointer!7
Needle!8
ISO mark!1
Strap eyelet@5
Dial scaleu
Lumispherq
Light sensorw
Aperture value
(for direct reading)r
ISO scale!0
Cine scale!2
Aperture scale!5
Zero adjust screw@1
Shutter speed scale!4
Meter
scale
Dial
scale

5
Total of 11 direct reading slides
(set of 11 slides in case).
•Keep Lumisphere, Lumidisc, Lumigrid or
High-slide out of reach of young children,
as swallowing such objects can cause suf-
focation.
Warning
4. Accessories
No. 5
HIGH
Lumisphereq
Lumidisc@3
Lumigrid@4
High (H) slide@2
Optional Accessories
(sold separately)
Direct reading slides.

6
5. BASIC OPERATION OF METER UNIT
1.Stopper Button Operation
If the stopper button !3 is pressed
when the stopper button mark !9
is set to ○, the meter needle !8
deflects according to brightness.
Then when the button is released,
the needle remains fixed at the
indicated position.
By holding the stopper button de-
pressed and turning it clockwise
so that the mark position becomes
○, the needle is released.
At this time, the meter will deflect
freely even if the stopper button
is released. To fix the needle, turn
the stopper button counter-clock-
wise to where the mark is posi-
tioned ○.
2.Zero Position Check and
Adjustment
With stopper button in released ○
position, cover light sensor with
hand or black cloth to completely
block light. Check that meter
needle !8 correctly indicates zero
position. If the indication deviates
from zero, while observing meter
indication, use a coin or similar
tool to turn the rear zero adjust
screw @1 and adjust for zero indi-
cation.
5
1
0
2
0
4
0
8
0
1
6
0
3
2
0
6
4
0
1
.
2
5
k
-
2
-
1
+
1
+
2
-
2
-
1
+
1
+
2
0
･
･
1
1
･
･
1
2
E
V
S
e
1
.
2
5
k
5
0
2
11
16
11.4
100
50
200
60
30
15
8
4
2
1
2
60
12
5
250
500
1
k
1/SEC
8k
4
k
2
k
ISO
8
18
24
64
128
CINE
128
90
64
8
2
1
0.7
F
1.4
H
5
1
0
2
0
4
0
8
0
1
6
0
3
2
0
6
4
0
1
.
2
5
k
-
2
-
1
+
1
+
2
-
2
-
1
+
1
+
2
0
･
･
1
1
･
･
1
2
E
V
S
e
1
.
2
5
k
5
0
2
11
16
11.4
100
50
200
60
30
15
8
4
2
1
2
60
12
5
250
500
1
k
1/SEC
8k
4
k
2k
ISO
8
18
24
64
128
CINE
128
90
64
8
2
1
0.7
F
1.4
H
5
1
0
2
0
4
0
8
0
1
6
0
3
2
0
6
4
0
1
.
2
5
k
-
2
-
1
+
1
+
2
-
2
-
1
+
1
+
2
0
･
･
1
1
･
･
1
2
E
V
S
t
u
d
i
o
D
e
l
u
x
e
Ⅲ
L-398A
1
.
2
5
k
6
4
0
3
2
0
1
6
0
8
0
4
0
2
0
1
0
5
0
2
28
4
56
8
11
16
11.4
60
30
15
8
4
2
1
2
8
15
3
0
60
125
250
500
1
k
1/SEC
8
k
4
k
4
2
k
100
50
200
ISO
8
18
24
64
128
CINE
128
90
64
45
3
2.8
4
2
1
0.7
F
1.4
H
・
・
・
・
Black cloth