Flash Sync Speed investigation X-Pro2
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!