Sekonic L858D-U-GX KIT for Godox

Product # SEE858GXMFR #401-858GXASIN: none
Product # SEE858GXMFR #401-858GXASIN: none
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Sekonic L858D-U-GX KIT for Godox
Sekonic L858D-U-GX KIT for Godox 0
Sekonic L858D-U-GX KIT for Godox 1
Usually Ships in 7-14 days.
$679.00
1358 U-REWARDS
  • Sekonic - L-858D-U Speedmaster Light Meter
  • For measuring light
  • 0.1–2,000,000-lux illuminance range
  • -5–22.9 EV expanded measuring range at ISO 100
  • 1° spot viewfinder
  • 2.7” LCD color touchscreen
  • Micro-USB port
  • Flash duration & HSS flash measurements
  • Water-resistant
  • Triggering and controlling the power level of Godox 2.4GHz wireless X system
  • Triggering and controlling the power level of Flashpoint 2.4GHz system built-in flash units
  • Modeling lamp output power control with ON/OFF
  • Wireless ID: (1 to 99 or OFF)
  • Channel: 32 (CH1 to 32)
  • Group: 16 (A to F, 0 to 9) + ALL
  • HSS (High Speed Synchro) flash radio triggering is available
Usually Ships in 7-14 days.
$679.00
1358 U-REWARDS
Have any questions?1-800-631-0300

overview

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

This kit 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. 

In the Box

  • Sekonic Speedmaster L-858D-U Light Meter
  • Anti-Glare Sheet for LCD Screen
  • Lens Cap
  • Strap
  • Soft Case
  • Sekonic RT-GX Godox Transmitter Module

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Fairfield

123 US Hwy 46 (West)
Fairfield, NJ, USA 07004
(973) 377-2007

Philadelphia

28 South 2nd Street
Philadelphia, PA 19106
(215) 608-2222

[email protected]
© 2025 Unique Photo All Rights Reserved.