User manual SEKONIC L-398A
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Manual abstract: user guide SEKONIC L-398A
Detailed instructions for use are in the User's Guide.
[. . . ] Meter stopper mechanism allows operation while hand is released from meter. Meter release mechanism is also included which allows the needle to deflect freely. 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 mechanism automatically takes into account the strength of light from all directions, causing the meter to indicate a value applicable to photography. [. . . ] By holding the stopper button depressed 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-clockwise to where the mark is positioned .
0
5
11
5
2 . 4
e S 11 1. 2 160 320 640 40 80 1. 2 16 20 +1 +2 -2 -1 0 H 2 EV +1
5k
5k 2 +
1
200 100
ISO
4 8 18 2
S
e
0
5
11 1. 2 0 80 160 320 64 1 0 1 16 0 4 1 +2 -2 -1 2 . 2 0 H + 2 EV +1
2 1. 4
2
2 60 1
64
250 8 50
12
CINE
50
5
1
0
ISO
200 100 50
2
4 8 18 2
25 60 1
64
Black cloth
2. Zero Position Check and Adjustment
With stopper button in released position, cover light sensor with hand or black cloth to completely block light. 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 indication.
20 5 10 2 . 4 11 0
1
5
-2
40 28
20
H
80 4
Studio
160 56
Deluxe
L-398A
320 8
0
160 320 640 40 80 -2 -1 1. 2 +1 +2
0
640 11 1. 2
16
ISO
45
3
5 8 18 24 0 12 8 15 30 6 4
4 24 6
6
2. 8
250
128
500 1k
CINE
200 100 50
2 1. 4 1 0. 7 F
1/S 2k 4k 8k
EC
11
12 EV
+1
-1
82 1. 4 1 0. 7 F
5k
EC 250 8 C I N E 1/S 500 1k 2k 4k 8k
5
11
1
-2
-1
12
8 2 0 1k 2k 4k 8 1. 4 1 0. 7 F
5k 2 +
/S k1
0
-2
EC
11
1
-1
60 30 15 8 4
15 8 4
6 128 90
21
60 30
60 30
15 8 4
4
5k
64 128 90
21
5k 2 +
64 128 90
21
5. BASIC OPERATION OF METER UNIT
3. Memo Pointer Operation
Rotate both Dial Ring !6 and dial of Memo Pointer !7 to align with Needle !8 position or desirable setting position. To mount, align white dots of Lumisphere frame and light sensor, then turn Lumisphere carefully clockwise (approx. Photo shows setting for ISO 100.
ISO
200 100 50
24
4 8 18 2
12 0 60
64
c. From position where subject is to be measured, point Lumisphere q in direction of camera. (Light sensor w can be turned freely. )
8
250 8 C I N E 5 k1 2. 8 00 1k 2k 4k 8
12
5
2
60 3 0
15 8 4
90 6
21
4
6. When the stopper button is released, the meter needle becomes fixed at the deflected position. If the location is excessively bright and the meter needle deflects beyond scale, insert the High slide @2.
ISO
5 10 20
2
-2
ISO
5 81 24 0 12 8 15 30 6 64 18
8 24
45 32 22 16 1
250
12
64
8C INE
200 100 50
EC
-1
13
1/S 5 5. 6 00 1k 2k 4k 8k F 4 2. 8 0. 7 2 1. 4 1
0 56 40 4 8 2 0 28 Deluxe Studio 5 10 2 0 320 640 1. 25 . 4 11 80 16 2 -2 -1 k + +1 0 H +1 14 EV
4
NE
200 100 50
1/S 2k 4k 8k
e. If the High slide @2 has been inserted, set the H mark o.
160 80 56 40 4 2 0 28 Deluxe Studio 5 10 2 20 40 . 4 5 10 11 -2 -1 +1 +2
L-398A
320 8
80
0
640 11 1. 2
16
5k
16 0 H 2 2 Deluxe Studio 5 10 2 20 40 . 4 80 5 10 11 -2 -1 16 0 +1 +2
H
0
40 11 1. 2
16
5k
EC
-1
8
9 EV
+1
. 2 40 1 06 32
-2
128
90 64
0
+2
7
60 30
15
60 30
640 11 1. 2
16
5k
5k
15 8 4
21
128
90
9
6. At this time, the shutter speed scale !4 and aperture scale !5 combination becomes the correct exposure. At ISO 100, the proper exposure becomes 1/250 sec at F/ 5. 6, 1/30 sec at F/16 and 1 sec at F/90. By changing ISO setting, the set combination of shutter speed and aperture scale is automatically altered to the appropriate one corresponding to the changed ISO value. Meter scale intermediate values
Footcandles
125 100
250 200
64 50
50 400 0
4
12 16 8 6
80 40 4 2 0 28 5 10 2 2. 8 2 . 4 11
25
160 56
320 8
80 1k 0
0
640 11 1. 2
16
5k
1. 6 k 2k
2 25 2 20
15
2
8 10
25 50 100 200 50 2 30 60 125
0 80 1k 400500
16 18 14
11 8 13 10 9
7. 1
5. 6 6. 4
. 2 2. 8 2 4 3. 2 2. 5 4. 5 3. 6
5
10k 8k
5k 4k
Film sensitivity intermediate values ISO
80 64
3 25020
64 50 0 0
40 0
160 125
200
100
50
25
40 32
20 16
12
8
6
10
10
1. 6 1. 4
1. 8
1. 3 1. 1
0. 8
Intermediate values for Shutter speed and aperture scale
8k 1/SEC
5 4 2 32 28 1 42 6 45 40 3 64 50 128 90 56 112 110 80 72
4k
1
2. 5k 2k
0. 9
1. 6k k 1. 2 1k 800
6. 4k
0. 7F
3. 2k
12k
6. STANDARD ACCESSORY OPERATION
2. Lumidisc
Employ for illumination contrast adjustment and illuminance measurement.
· Contrast measurement
a. Hold meter at subject position and point Lumidisc @3 directly toward center of main light. Turn the memo pointer dial Main light and set the memo pointer !7 at the footcandle value the needle points to. In this case, take care that light from main source does not enter sensor. Read a difference between the footcandle value the Fill-in light memo pointer is set (see above d) and the one for fillin light (= needle position). Ratio between main and fill-in light footcandles becomes the contrast ratio. [. . . ] HIGH slide is standard accessory and not included in the slide set, though there is a space to store it in the case of slide set.
· ·
16
7. Optional Accessories Operation
2. Direct Reading Slide Application
When photographing, select slide from the above table according to film sensitivity and shutter speed. Insert slide and perform measurement in the same manner as for incident light. Since it is not necessary to rotate the dial when employing direct reading slides, setting becomes extremely fast and convenient.
17
8. [. . . ]
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