User manual SEKONIC L-398A

[. . . ] The Studio Deluxe is the answer to this problem. 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. Meter stopper mechanism allows operation while hand is released from meter. [. . . ] STANDARD ACCESSORY OPERATION Incident Light Measurement 1. To mount, align white dots of Lumisphere frame and light sensor, then turn Lumisphere carefully clockwise (approx. Set film sensitivity knob @0 to sensitivity value of employed film. Set ISO value to right side ISO mark !1. 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. Hold meter erect and press stopper button !3. Meter needle !8 deflects according to brightness. 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. Read the footcandle scale e of the meter needle. Transfer footcandle value to the dial scale u. Rotate the dial ring !6 and set the scale mark i. 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. Example:With High slide inserted, meter indicates 80 footcancles. 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. Install in the same manner as Lumisphere. [. . . ] 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. Read directly the aperture value r indicated by the meter needle !8. Since it is not necessary to rotate the dial when employing direct reading slides, setting becomes extremely fast and convenient. 17 8. [. . . ]