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Sekonic

Sekonic 401-823 Replacement Lumigrid for L-398 Meters

★★★★★5.0 (7 reviews)

Restore precise reflected-light metering to your Sekonic L-398 series with this bayonet-mount Lumigrid replacement.

$15.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Sekonic 401-823 is a replacement Lumigrid attachment engineered for the L-398 Series, L-28C2, and L-28C analog light meters. Its purpose is to convert these meters from broad incident-light reading mode into a directional reflected-light configuration by narrowing the acceptance angle of the sensor. This allows photographers and cinematographers to isolate specific subject areas — such as a face against a bright window or a dark background in a multi-light setup — and take precise exposure readings without walking up to the subject.

The attachment uses a secure bayonet mount that clicks into place on compatible meters, ensuring it stays firmly positioned during use and can be removed just as easily when switching back to incident metering with the standard dome. For users who depend on their Sekonic analog meters for evaluating lighting ratios, background brightness, or zone-system-style spot readings, the Lumigrid is a necessary tool. As a replacement part, it is particularly valuable for restoring full functionality to older meters where the original Lumigrid has been lost or damaged.

Key Features

Specifications: Replacement reflected-light Lumigrid attachment for L-398 Series, L-28C2 & L-28C meters, directional light control design, bayonet mount installation, supports precise ambient reflected measurement, durable construction.

Directional Light Control: Narrows the light acceptance angle to isolate specific subject areas, improving reflected exposure readings in complex or high-contrast lighting environments.

Secure Bayonet Mount: Quick-install attachment locks firmly into compatible meters, ensuring stable positioning and dependable performance during metering sessions.

Enhanced Measurement Precision: Ideal for evaluating background brightness and lighting ratios, helping achieve consistent and repeatable exposure control.

Designed for Compatibility: Specifically engineered for L-398 Series, L-28C2 and L-28C models to maintain accurate reflected light measurement functionality.

Specifications

Brand
Sekonic
Model
401-823
Type
Replacement Lumigrid (Reflected Light Attachment)
Compatibility
L-398 Series, L-28C2, L-28C
Mount Type
Bayonet Mount

Pros & Cons

👍 Pros

  • Bayonet mount installs and removes quickly without tools
  • Narrows the acceptance angle for targeted reflected-light readings
  • Enables lighting ratio and background brightness evaluation on compatible meters
  • Durable construction designed to match the longevity of Sekonic meters

👎 Cons

  • Only compatible with L-398 Series, L-28C2, and L-28C meters — very limited model range
  • Single-purpose accessory that serves only one metering function
  • Small and easy to misplace when not attached to the meter
  • No carrying case or protective cover included

Frequently Asked Questions

It is designed for the Sekonic L-398 Series, L-28C2, and L-28C meters. It will not fit other Sekonic models.
It narrows the light acceptance angle of your meter, converting it from an incident reading to a directional reflected-light reading so you can isolate and measure specific subject areas.
It uses a bayonet mount that locks into place with a quick twist — no tools or adhesives needed.
Use the Lumigrid when you need to measure reflected light from a specific area, such as evaluating background brightness, checking lighting ratios, or metering a subject from a distance.

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