Sekonic L-858D-U (401-858) Meter plus RT-BR (401-629) Transmitter Module

This Sekonic L-858D-U Speedmaster kit pairs the flagship light meter with the RT-BR Broncolor radio module, aimed at photographers and cinematographers who need precise flash and ambient readings plus wireless control over Broncolor lighting from the meter itself. The meter's expanded -5 to 22.9 EV range and 0.1 to 2,000,000 lux illuminance range cover everything from near-dark interiors to bright exteriors, while its all-weather build stands up to on-location use. Because the RT-BR module fits inside the meter's housing, radio triggering adds no extra bulk to carry.

• Expanded EV and illuminance range: Measures -5 to 22.9 EV at ISO 100, or 0.1 to 2,000,000 lux, covering both flash and ambient light.
• Dual metering heads: Switches between a 270° rotating, collapsible lumisphere for incident readings and an integrated 1° spot viewfinder for precise reflected readings.
• Flash duration and HSS measurement: Measures flash duration from 1/40 to 1/55,500 second and takes readings with high-speed sync flash.
• Flash Analyzing Function: Measures ambient and flash simultaneously to show the percentage of flash contributing to the exposure.
• Built-in Broncolor radio triggering: The included RT-BR module adds 2.4GHz wireless access to 99 Radio Studio Addresses and 40 Lamp Addresses within a 98.4' range, plus remote modeling light control.
• All-weather, dust and splash-proof build: Rated to JIS Class 4 with a 2.7" color touchscreen for reliable field use.