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Sekonic Release New Transmitter Module RT-GX for SPEEDMASTER L-858D


Sekonic Corporation, the leader in design and engineering of Professional Photographic Light Meters, and Godox Photo Equipment Co. Ltd., the manufacturer of Professional Photographic Lightings, today announced their collaboration to offer wireless radio flash triggering of Godox compatible flashes.

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. Upgrade your L-858D's firmware via Data Transfer Software, and you are ready to go. The Sekonic RT-GX Transmitter will be available in the market from November 2020.

“Together with Godox, we are proud to announce the Sekonic 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, " says Kenji Sawai, Director and General Manager of Sekonic. 

Sekonic's mission is to enable image makers to craft great light in every image, and the Sekonic RT-GX simplifies the process. It helps you quickly dial in your lighting recipe to get to your final image with exacting precision.  

Full Radio Compatibility

Godox users will rejoice in being able 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.