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Field Guide: FJ Wireless Flash & Sony a9 III Compatibility SettingsUpdated 3 months ago

This guide is your key to achieving maximum compatibility between the Sony a9 III and the FJ Wireless Flash System. By customizing specific settings on both your camera and flashes, you'll achieve optimal performance to bring your creative vision to life. We will update this guide with additional settings and new findings as they’re available to ensure your gear performs at its best.

Sony a9 III Settings

  • Manual Mode
    • Set to Manual Mode for achieving flash sync speeds up to 1/80000
  • Silent Shutter
    • Shooting Menu-> Silent Mode Settings-> Off
  • Flash Mode
    • Exposure/Color Menu -> Flash Mode -> Fill Flash
  • Wireless Flash
    • Exposure/Color Menu-> Wireless Flash -> Off
  • Red Eye Reduction
    • Exposure/Color Menu -> Red Eye Reduction -> Off
  • Sync Terminal Setting
    • Exposure/Color Menu -> Sync Terminal Settings -> Always
  • Reg. Flash Shooting Set
    • Exposure/Color Menu -> Reg. Flash Shooting Set -> Shutter Speed Range 1/60-1/80000
  • Flash Timing Setting
    • Exposure/Color Menu -> Flash Timing Setting -> On->
    • Change the µs to the appropriate number that’s determined by your shutter speed and the power of your flash

FJ Wireless Settings

  • Currently, all FJ Wireless equipment must be in Manual Mode to achieve flash sync speeds of up to 1/80000
  • TTL Mode is currently unavailable when trying to achieve a shutter speed past 1/8000
  • FJ-X triggers should be set in Front Curtain shutter and not HSS. (HSS will not allow you to go past a shutter speed of 1/8000.)

 

FJ400 Flash Sync Settings

FJ400 @ 1 Meter

Shutter Speed500100020004000800010000200004000080000
Flash PowerFlash Sync Setting
90300560600660760680640660
80580700760800940780960980
70160580680820760820960900
600480620720660780800800
50120460520680700660720740
400360500560620680660680
300380440540540560620620
2040320400500520620620580
100220420450420440460480


FJ200 Flash Sync Settings

FJ200@ 1 Meter

Shutter Speed500100020004000800010000200004000080000
Flash PowerFlash Sync Setting
9360
400480600560580660640680
85404609001000820920980820820
740420640780920920840860840
6300260460700800860800860800
518080380500640660700660700
4340220240400500520560580580
3300100300300400440460460460
234060320360400380400420420
1140100180280380400420420420

 

FJ80ii Flash Sync Settings

FJ80ii @ 1 Meter

Shutter Speed500100020004000800010000200004000080000
Flash PowerFlash Sync Setting
90040160220200240260280
8002040200100120200120
72020204012040100180220
620202020100100160180180
5204002080120160180180
4202020204060100120120
3020004060100140140
2404020204080100140140
140400204060100120120


FJ80 SE Flash Sync Settings

FJ80 SE @ 1 Meter

Shutter Speed500100020004000800010000200004000080000
Flash PowerFlash Sync Setting
9080400180580480620300320
820080500260400340260360
7020220540360400440760540
610010080240400400380460400
560808080160180220240200
4020200100120120140160
3040202060100120140140
260002060608080120
102020204040608080

Updated: 1/6/2025

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