Flash Sync Speed investigation X-Pro2

edited March 2017 in V6 II Problems
Hi dears

have made a few tests with the Cactus and have observed the following in HSS OFF (Forced HSS OFF) mode.

1/250th second sync speed - black banding at the bottom (small one but noticeable)
1/200th second sync speed - smaller black banding at the bottom (nearly not noticeable anymore)
1/160th second and longer - no black banding more at all

Did a test with my Jinbei TRS-V trigger (capable up to 1/250th sec sync time) and a Jinbei DPIII300 studio flash - with exactly the same result.

However when I try the EF-X8 Fuji flash on the camera 1/250th sec is no issue at all.

Conclusion seems to be that the Fuji camera look to have a problem with radio trigger timing (have read that some have the same issues with pocket wizards).

Can someone also confirm this issue? I mean in a usual studio environment 1/160th sec is no issue, but still this should be investigated.

Switching into Normal HSS (Forced HSS mode on) leads into a slightly less exposured picture, but over all sync times up to 1/8000th sec exposure is stable.

There could be a small banding over the picture (tried learn HSS like 10 times) but in real world that should not be noticeable.


Thanks for your comments and take care!





Comments

  • Thanks for sharing your findings.

    TBH we didnt really test much in such a setup - with studio strobes, which the V6 II was designed for, but I shall pass the info to our R&D team.

    Learn HSS should only be able to fix sync issues in HSS mode.

    Thank you and I'll keep you posted.
    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 info@cactus-image.com.  At Cactus, we listen. 
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