Sekonic Lumidisc for L-398M Exposure Meter

The Sekonic Lumidisc for L-398 Series, L-28C2, and L-28C Light Meters is designed to measure incident light falling on flat subjects and illumination contrast. Compatible with specific Sekonic meters, this Lumidisc serves as a replacement part included with the original meter. It weighs just 0.02 lb (0.01 kg) and has compact dimensions of 1.18 x 1.18 x 0.39 inches (3 x 3 x 1 cm).