Sekonic STUDIO DELUXE? L-398A Operating Instructions Manual
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Sekonic STUDIO DELUXE? L-398A Operating Instructions Manual

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STUDIO DELUXE
L-398A
Operating Instructions

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Summary of Contents for Sekonic STUDIO DELUXE? L-398A

  • Page 1 STUDIO DELUXE L-398A Operating Instructions...
  • Page 3 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 re- sult in severe personal injury or death. CAUTION Indicates hazards or unsafe practices that can re- sult in the personal injury or damage to your L-398A exposure meter.

  • Page 4: Table Of Contents

    CONTENTS SAFETY PRECAUTION CONTENTS 1. Features 2. Specifications 3. Part Designations 4. Accessories 5. Basic Operation of Meter Unit 1. Stopper Button Operation 2. Zero Position Check and Adjustment 3. Memo Pointer Operation 6. Standard Accessory Operation Incident Light Measurement 1.

  • Page 5: Features

    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 expo- sure determination and to which portion the exposure is set becomes a vital factor that considerably affects the appearance of the finished photograph.
  • Page 6 1. FEATURES BACK LIGHT MAIN LIGHT AMORPHOUS PHOTOSENSOR LUMISPHERE FILL-IN LIGHT INCIDENT LIGHT 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 malfunc- tion: Cash cards and other magnetic cards, floppy disk, TV Set, CRT display, and other apparatus sensitive to magnetic fields.

  • Page 7: Specifications

    2. SPECIFICATIONS Type Analog exposure meter for ambient light Light receiving method Incident light and reflected light Light receiving section Incident light: Lumisphere and Lumidisc Reflected light: Lumigrid (30 deg. of light receiving angle ) Measuring range Incident light: EV4 to 17 (ISO 100) Reflected light: EV9 to 17 Film speed...

  • Page 8: Part Designations

    3. PART DESIGNATIONS Front Lumispherq Light sensorw Footcandle scalee Meter scale Aperture value Memo (for direct reading)r pointer!7 Needle!8 EV scalet L-398A “H” marko Dial scaleu Scale marki EV marky ISO scale! 0 Dial scale ISO mark!1 Cine scale!2 Stopper Stopper button!3 button mark!9 Shutter speed scale!4...

  • Page 9: Accessories

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

  • Page 10: Basic Operation Of Meter Unit

    5. BASIC OPERATION OF METER UNIT 1.Stopper Button Operation If the stopper button !3 is pressed when the stopper button mark !9 , the meter needle !8 is set to deflects according to brightness. Then when the button is released, the needle remains fixed at the indicated position.

  • Page 11: Memo Pointer Operation

    5. BASIC OPERATION OF METER UNIT 3.Memo Pointer Operation Rotate both Dial Ring !6 and dial Dial of Memo Pointer !7 to align with Needle !8 position or desirable setting position. See page 11 for actual use. Memo Pointer...

  • Page 12: Standard Accessory Operation

    6. STANDARD ACCESSORY OPERATION Incident Light Measurement 1. Lumisphere a. Mount Lumisphere q to light sensor w. To mount, align white dots of Lumisphere frame and light sensor, then turn Lumisphere carefully clockwise (approx. 45 deg )to secure. b. Set film sensitivity knob @0 to sensitivity value of employed film.
  • Page 13 6. STANDARD ACCESSORY OPERATION d. Hold meter erect and press stopper button !3 . Meter needle !8 deflects according to brightness. When the stopper button is re- leased, 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 .
  • Page 14 6. STANDARD ACCESSORY OPERATION g. 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.

  • Page 15: Lumidisc

    6. STANDARD ACCESSORY OPERATION 2.Lumidisc Employ for illumination contrast adjustment and illuminance measure- ment. • Contrast measurement a. Mount Lumidisc @3 to light sensor w. Install in the same manner as Lumisphere. (See P. 8) b. Hold meter at subject position and point Lumidisc @3 directly toward center of main light.

  • Page 16: Reflected Light Measurement

    6. STANDARD ACCESSORY OPERATION • Illuminance (Lux) measurement a. Mount Limidisc @3 to light sensor w in the same manner as Lumisphere. b. Place Lumidisc @3 parallel with the light source. c. Press stopper button !3 and read meter scale footcandle indica- tion e.
  • Page 17 6. STANDARD ACCESSORY OPERATION e. Press stopper button !3 , and read meter scale footcandle indica- tion e. However, since footcandles are units of incident light only, this value becomes simply a reference. Transfer indicated value to dial scale u. Rotate the dial ring !6 mark o.

  • Page 18: Other Operations

    6. STANDARD ACCESSORY OPERATION Other Operations 1.Exposure Value (EV number) Readout Reading this exposure value to perform setting becomes conve- L-398A nient for cameras which employ a light value system of shutter and aperture combination. a. Read meter needle !8 foot- candle indication e.

  • Page 19: Using Exposure Multipliers (-2, -1, +1, +2)

    6. STANDARD ACCESSORY OPERATION Note: Some cine cameras possess faster exposure times due to a narrower rotating shutter angle (angle of light transmitting portion). It is important to know the accurate shutter angle value versus cine speed for your camera in order to determine proper exposure. Refer to the camera operating instructions, maker’s catalogue, etc.

  • Page 20: Optional Accessories Operation

    7. Optional Accessories Operation 1.Direct Reading Slides A total of 11 slides are available, all of which may be used together with the Lumisphere and Lumidisc. (Note that they cannot be used with Limigrid.) The High slide, as mentioned previously, is employed for varying the measuring range in 2 steps (high and low illumination), however, it can also be used for direct reading.

  • Page 21: Direct Reading Slide Application

    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 measure- ment in the same manner as for incident light. Read directly the ap- erture value r indicated by the meter needle !8 .

  • Page 22: Handling Cautions

    8. HANDLING CAUTIONS Since the Studio Deluxe is a high precision instrument, use ample care in regard to the following points. • Avoid dropping or subjecting it to strong shock. • Do not store in areas subject to magnetic fields or where insect repellants are located (metal cabinets, clothing dressers, etc.).
  • Page 24 7-24-14, OIZUMI-GAKUEN-CHO, NERIMA-KU, TOKYO 178-8686 JAPAN TEL: +81 ( 0 ) 3-3978-2335 FAX:+81 ( 0 ) 3-3978-5229 http://www.sekonic.co.jp/English JG1297521...

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