Sekonic 401-823 Replacement Lumigrid for L-398 Meters

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.