Sekonic 401-399 User manual
STUDIO DELUXE Ⅲ
L-398A
Operating Instructions
SAFETY PRECAUTION
This manual uses the following safety labels for WARNING and
CAUTION that you must follow.
WARNING
Indicates hazards or unsafe practices that can result in severe personal injury or death.
CAUTION
Indicates hazards or unsafe practices that can result in the personal injury or damage to your L-398A
exposure meter.
WARNING
Keep Lumisphere, Lumidisc, Lumigrid or High-
•
slide out of reach of young children, as swallowing 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.
CAUTION
This L-398A has a powerful magnet. Do not
•
place it close to the following materials, otherwise 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 apparatus sensitive to magnetic fields.
CONTENTS
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
1. FEATURES
Nearly all photographic subjects combine complex variations of
strongly reflecting surfaces (high reflectivity) and weakly reflecting
surfaces (low reflectivity). These variations delicately influence exposure 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 Ⅲ is 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 determining 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 conditions, brighter surfaces (highlights) and darker surfaces (shadows) 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 applicable 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 photographic techniques to be enjoyed.
1
1. FEATURES
MAIN LIGHT
BACK LIGHT
LUMISPHERE
AMORPHOUS PHOTOSENSOR
FILL-IN LIGHT
160
051020
40
2
11.4
80
4
2.8
INCIDENT
5.6
LIGHT
320
8
640
1.25K
16
MICROAMMETER
MAGNET
Caution:
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 malfunction: Cash cards and other magnetic cards,
floppy disk, TV Set, CRT display, and other
apparatus sensitive to magnetic fields.
2
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.
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
3
3. PART DESIGNATIONS
Front
Lumispherq
Light sensorw
Memo
pointer!7
Needle!8
“H” marko
EV marky
ISO mark!1
Stopper
button mark!9
Film sensitivity
selector knob@0
Strap eyelet@5
Rear
4
5
0
128
90
Footcandle scalee
Aperture value
Meter
scale
(for direct reading)r
8
0
4
4
0
2
28
0
1
64
2
11.4
1
5
15
8
45
u
t
S
8
0
4
0
2
1
+
0
H
2
1
･
･
1
1
1
-
･
･
0
2
-
60
200
30
100
50
ISO
4
2
1
2
4
32
22
16
3
2
0
56
8
6
4
e
D
l
u
x
o
i
e
d
6
1
0
0
3
2
-
-
2
1
+
V
E
18
8
8
30
15
11
0
0
60
64
6
4
128
125
5.6
0
1
.
+
1
+
1/SEC
CINE
250
4
2
5
k
2
k
8
k
k
2
k
1
500
11
4
2.8
1
.
2
5
k
16
F
0.7
1
1.4
2
Ⅲ
2
24
8
L-398A
1
6
0
0
EV scalet
Dial scaleu
Scale marki
ISO scale!0
Cine scale!2
Stopper button!3
Shutter speed scale!4
Aperture scale!5
Dial ring!6
Dial
scale
Zero adjust screw@1
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