Sekonic RT-GX Godox Transmitter for L-858D-U Speedmaster Light Meter

overview

The Sekonic RT-GX Transmitter is a user-replaceable radio module that fits neatly next to the batteries in the SPEEDMASTER L-858D Light Meter. 

Together with Godox, Sekonic developed the RT-GX transmitter module for the Sekonic L-858D (International) and L-858D-U (USA) Light Meters. This collaboration brings a fully integrated light metering workflow to Godox users, making it possible for them to measure effortlessly, control, and analyze the characteristics of flash like never before. The Sekonic RT-GX simplifies the process of lighting a portrait, analyzing a scene and helping you quickly dial in your lighting recipe to get to your final image with exacting precision.  

Full Radio Compatibility

The L-858D with the RT-GX transmitter module enables you to call upon all 32 channels (1-32), 16 groups (A-F,0-9) and Wireless ID's to remotely trigger their Godox compatible lights up to 100ft (30 meters) away. You can even wirelessly control the power of modeling lights as well.

HSS Flash Metering

Godox users can now measure the power of HSS. No need to guess what your exposure is when using High-Speed Sync. Tell the meter your ISO and shutter speed, and it will do the rest. 

Next Level Flash Analysis 

Now Godox users can more easily measure the percentage of flash in their images to maintain the desired mix of ambient and flash. Measure flash duration as well to know how much stopping power your lights have to freeze sweat coming off an athlete or the flowing gown of a fashion model.