After much trying, it doesn't seem to work

I have followed all the instructions namely
1. Downloaded the firmware and installed by replacing files, and the instructions on installation.
2. Removed the spring on both my XT-2 and T10
3. Pressed the shutter to 'learn' HSS

Despite all this, there is no HSS - on one of my two VT 11s after pressing the wheel, it says 'Fuji does not do HSS' - even though it instructed me to take a shot at 1/1000.  On the other VT11 it learns it, and 'HSS on' appears, but it does not synch at speeds above 1/250 on the XT2.  The flash guns are the Nissin i40 and the Fuji EF-42.

So, the VT11s will synch normally at 1/250 and under, but still don't provide HSS at all over 1/250.  I await any further firmware upgrades, but might have to take these back to have a refund unless anyone can tell me how to make them work?



  • The flash guns are the Nissin i40 and the Fuji EF-42.

    Hi Andrew, thanks for your message.

    Neither of your flashes support HSS!

    So it is normal that they are not working on your X-T2, or any camera for that matter. Seems like you need to get a HSS-compatible portable flash before you run any further tests.

    BTW, what's a VT11?
    Antonio Lao
    Brand Manager

    To help us better help you, always state the exact firmware version installed on your Cactus device(s), such as: "1.1.013", "NIK.A.001", "v.103", or "A06".

    TTL or HSS not working on Cactus V6 II and V6 IIs? Be sure to check hot shoe connectivity by doing the <CAMERA INFO> check.

    Feel free to suggest an improvement or share product ideas. Contact us directly at  At Cactus, we listen. 
  • Ah - are you saying that my flashgun needs to be HSS compatible - and that the Nissin and Fuji flashes I have will never work with the V6 II? So I need to buy an HSS compatible flash? I thought you could get HSS with any flash gun..?
  • Just to confirm- My EF-42 and Nissin i40 both work with the Cactus V6 ii , but not in HSS mode - will there be firmware to make these do HSS? Your manual says they should work ...
  • EF-42 and i40 for Fuji doesn't support HSS. Although you can turn on the HSS manually on the i40, but it40 doesn't have HSS date transaction to the camera or even flash trigger. 

    Because those flash doesn't have HSS support, it cannot use HSS on the V6II. 

    However, if you have other flashes that support HSS, for example TTL flash of Canon, Nikon and Olympus system, the Fujifilm camera with V6II will be able to fire the remote flash in HSS. 
    Ray Chan

    Senior Product Specialist
    Harvest One Limited
  • for i40 and fuji, i40 can only hss on M mode.

    watch my video.

  • Ah - on your website you refer to 'Flash model profiles installed in V6II' and under Fujifilm you describe 'Fujifilm TTL HSS models: and you list Fujifilm EF-42 and Nissin i40'
    So - is your website not correct, as when I read this, I bought the V6II expecting these flash guns to work HSS.
  • I see what Andrew is saying and when I read the website I came to the same conclusion. I think there needs to some alteration to the website.
  • for i40 and fuji, i40 can only hss on M mode.

    Great finding!

    I guess the i40 flash tube is ready for HSS. The flash pulse is long enough to cover the shutter of camera. The Fujifilm doesn't have native HSS support to the flash. There is no HSS signal through the camera hot shoe. With V6II, the camera can trigger the flash in sync with HSS. This is the similar situation when using V6II on studio strobe. 

    Ray Chan

    Senior Product Specialist
    Harvest One Limited
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