I used two SB900 Flash guns with the Pocket Wizard System when I had my Nikon D800
I kept the Flashguns and Pocket Wizards for a while after I sold my Nikon gear as it's possible to trigger Nikon Flashes from a Fuji Camera using the Pocket Wizard and AC3 ZoneController
I tried this out and it worked perfectly. Setting the SB900's as normal and the AC3 ZoneController to manual mode allowed me to remotely control the power output from the SB900's individually from the hot shoe mount of the Fuji
Additional information can be found here
I sold my Pocket Wizards and SB900's a few months ago and so have not used these with the Fuji X-T2. I don't often use artificial lighting as I no longer shoot weddings but thought I would look at options for the Fuji X-T2
Cactus V6 II
I read that Cactus had updated the Firmware for their recently released Cactus V6 II Wireless Flash Transceiver to support the Fuji X-T2. The combination of Cactus V6 II and Cactus RF60 Wireless Flash looks like it fits my current needs.
The RF60 Flash has the Cactus Transceiver Tech built in so there is no need to attach it to a second V6 II for it to receive signals from the V6 II mounted on the X-T2. This gives full HSS remote flash with one V6 II and one Flash Unit
Quality and Feel
I have owned Nikon SB900 Speed lights and the although the RF60 has a good build it does feel far 'cheaper' than the Nikon. That said you could almost buy two RF60's and a V6 II for the price of one SB900!
The Battery Release Door for is overly stiff and feels flimsy and the product lacks a lot of the features of the Nikon System. To be honest I can name most of these off the top of my head and I rarely used them myself.
The Cactus V6 II also has a good build quality but is not as well made as the Pocket Wizard MiniTT1 and FlexTT5 but then again it is a fraction of the cost.
Out of the Box
I was pleased to find that the V6 II and RF60 'spoke' to each other straight out of the box and seemed to work well.
I recommend to use regular AA batteries in the V6 II and re-chargeables in the RF60. I have had a lot of success with Eneloop re-chargeables which give a very fast Flash re-cycle time
Getting the X-T2, V6 II and the RF60 Flash to communicate and fire in High Speed Sync (HSS) mode was a little more of a challenge. I don't spend a lot of time reading the manuals which doesn't help (I recently tried to read the Fuji X-T2 manual and fell asleep!)
The first thing to do is update the products to the latest firmware - I managed to mess this up the first time (by not reading the instructions clearly!)
In fact Cactus make updating Firmware very easy. Simply install the firmware update application from the Cactus Site, install and select to download the latest firmware and update NOTE: The V6 II is updated with it's batteries removed which I didn't initially realise.
Remove the Spring Plate
It is recommended to remove the steel spring plate from the flash show of the X-T2 to ensure a good connection between camera and V6. This is pretty easy to do but some kind gentle man has created a video. It's for the X-T1 but works just as well for the X-T2
The X-T2 needs to be 'taught' HSS. After connecting the V6 II to the modified X-T2 hot show. Turn on the camera followed by the V6 in TX mode (while keeping the shutter half pressed) An 'F' should appear indicating that the V6 has recognised your Fuji.
Press the V6 Menu and use the dial to navigate to 'Camera and Flash Set Up' Click OK and then navigate to 'Learn HSS' - Follow the instructions to take a photograph at 1/1000th of a second.
You are now set to use the V6 which will communicate directly with the RF60 when in Slave Mode. Make sure that the channel and group in the V6 II math the Channel and Group on the RF60 (e.g. Channel 1, Group A)
If you are opperating the X-T2 outside of the normal flash sync speed of 1/250th Second then ensure that you push the scroll wheel on the V6 II once to set HSS mode. The camera will now fire the flash effectively up to 1/8000th of a second.
Radio Set Up
I experienced some in-consistent results when testing out the RF60 and V6 II this was due to operating distance mode being set as 'Long' as a default. If camera and flash are relatively close together navigate to the Radio Set Up section of the V6 II menu and change this to 'SHORT'
Grab yourself a beer (I did! :) )