Product Highlights
  • Measures Incident & Reflected Light
  • EV 4 to 17 Measuring Range (Ambient)
  • ISO 6 ~ 12,000 (1/3 steps) Film Speed Range
  • F0.7 to 128 (1, 1/2, 1/3 steps) Aperture Range
  • 190 g (6.8 oz) Weight
  • Built-in Lumisphere Quick switch from Incident to Reflected Light Measurement
  • Lumidisc Offers Precise Contrast & Brightness Measurement
Sekonic L-398A Studio Deluxe III Sekonic L-398A Studio Deluxe III
Web Availability: Special Order
This product will be Special Ordered just for you from the manufacturer. We do not stock this item due to its uniqueness or import schedule. Special Order items are Final Sale, see our Return Policy for details.
Vistek Locations
  • Toronto Special Order
  • Ottawa Special Order
  • Mississauga Special Order
  • Calgary Special Order
  • Edmonton Special Order
Please call and verify availability at the store as stock changes daily.


An industry standard for still and cinematographic ambient light reading. Swiveling light receptor. Readouts in multiple still and cine scale or direct readout with optional ISO index slides. Selenium photo cell requires no battery.

Key Features

  • The Industry Standard for Incident and Light Measurement
    The studio meter to which all others are compared
  • Swivel Head and Needle Lock
    Facilitate easy and accurate readings
  • Amorphous Silicon Photocell
    Eliminates need for batteries
  • Interchangeable Lumisphere and Lumidisc
    Allows adjustment of illumination contrast and measurement of illumination intensity
  • Lumigrid Included
    For measuring reflected light
  • Memory Pointer
    Retains prior reading


Product Specifications


Type: Analog exposure meter for ambient light
Light receiving method: Incident light and reflected light
Incident light: Interchangeable Lumisphere and Lumidisc
Reflected light: Interchangeable Lumigrid
Light receptor element: Amorphous silicon photocell


Measuring Range (ISO 100)

Ambient light: Incident light: EV 4 to EV 17
Reflected light: EV 9 to EV 17
Repeat Accuracy: +/- 0.3 EV or less
Calibration Constant: Incident light metering: Lumisphere C = 340
Reflected light metering: K = 12.5

Display Range

Film speed:

ISO 6 to 12000 (in 1/3 steps)

Shutter Speeds: Ambient light: 60 seconds to 1/8000 second (in 1, 1/2 or 1/3 stop)
Cine speeds: 8, 16, 18, 24, 64, 128 frames per second
Aperture: f/0.7 to f/128 (in 1, 1/2 or 1/3 stop)
Light Receptors EV 1 to EV 20

Other features

Selenium photocell eliminates need for batteries

Dimensions: 4.4"W x 2.3"H x 1.3"D (112mmW x 58mmH x 34mmD)
Weight: 6.8oz (190gm)
Standard accessories supplied: Lumisphere, Lumidisc, Lumigrid, High Slide, case, strap

Optional accessories:

  • Cat# 401-805 Direct Readout Slide Set (11 Slides)
  • Cat# 401-801 Folding Stand-Up Gray Card

Features and specifications are subject to change without notice.

Questions & Answers

Sekonic L-398A Studio Deluxe III

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