Sekonic Speedmaster L-858D-U Light Meter (401-858)

Flash Duration Measurements - Understanding flash duration is the first step in freezing fast-moving subjects.. Radio Control Modules for Wireless Triggering - The L-858 Speedmaster Pro expands upon ground-breaking innovation by adding functionality for Elinchrom Skyport and Phottix Strato II/ Ares II users. Increased Light Sensitivity - An additional 3-stops of light sensitivity for incident light, 2-stops, for reflected light (spot), and an ability to capture a reading down 0.1 lx of Illuminance. HSS Flash Measurements - Finally, photographers now have an accurate way of measuring their lights when they want to overpower the sun or achieve a very shallow depth of field through using HSS. Flash Analyzing Function - Measures ambient and flash simultaneously and automatically indicates the percentage of flash in the total exposure