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Sekonic Studio Deluxe III L-398A

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Category: Photography-Photo-Accessories-Light-Meters, sekonic

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The classic photo meter tracing its roots to the famous Norwood Director, the Sekonic L-398A has become a favorite with cinematographers the world over. A pure analog experience, the meter needle and exposure dial system gives you all reading combinations at a single glance. And because it uses an amorphous photocell that generates its own power, there is no need for a battery. 


Incident measurements can be taken with the over 180-degree Lumisphere for general readings of three-dimensional objects, or with the Lumidisc selective area readings, measuring the lighting ratios between highlights and shadow areas or light falling on flat-field objects such as artwork, measurements outdoors or under bright studio lights. The Sekonic L-398A's swivel head allows you to hold down the metering button and "walk the set" to check light levels. Release the button, and the needle locks down the meter's analog display needle for easy-to-read exposure calculations. Exposures are displayed for both still and cine applications.


For reflected readings, a flat Lumigrid replaces the Lumisphere. If you plan on shooting with a fixed ISO and shutter speed, an optional Slide Set (Direct Reading Slides) makes it easier to take readings in fast-paced shooting scenarios. The Sekonic L-398A Studio Deluxe III makes an ideal prime or back-up meter for still or motion picture shooters

Type: Analog exposure meter for ambient light

Receptor Head: Rotating Domed Head 90° to the right, 180° to the left, Removeable for Contrast Reading

Light Receiving Method: Incident light and reflected light

Receptor Incident Light: Interchangeable Lumisphere and Lumidisc

Receptor Reflected Light: Interchangeable Lumigrid

Light Receptor Element: Amorphous silicon photocell

Measuring Range and Modes

Measuring Modes Ambient Light: - Aperture priority metering

- EV metering

- Shutter priority metering

Measuring Range (ISO 100) Ambient Light: - Incident light: EV 4 to EV 17

- Reflected light: EV 9 to EV 17

Repeatability Repeat Accuracy: (+/-) 0.3 EV or less

Calibration Constant Incident: Lumisphere C = 340

Calibration Constant Reflected: K = 12.5

Display Range and Modes

Display Range Film Speed: ISO 6 to 12000 (in 1/3 steps)

Display Range Shutter Speeds Ambient: 60 min to 1/8000 sec. (in 1, 1/2, 1/3 steps)

Display Range Aperture: f/0.7 to f/128.0 (in 1, 1/2, 1/3 steps)

Display Cine Speeds fps: 8 fps -128 fps

Display Range Analog Scale Aperture: f/.7 to f/128 (in 1, 1/2 or 1/3 steps)

Display Range Analog Scale Shutter Speed: 60 sec. to 1/8000 sec. (in 1, 1/2 or 1/3 steps)


Battery Power Indicator Display: Battery Capacity Checker Button and Guide Needle

Battery(Power): Self-powered: Selenium photocell eliminates need for batteries

Dimension and Weight

Product Dimensions: 4.40x2.30x1.30 in./11.20x5.80x3.30 cm

Product Weight: 0.40lbs./0.20kg.

Item Includes

L-398A Case, Strap, Lumidisc, Lumigrid and High Slide


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