mihazero said:
My 5D4 is working well using TTL with my Flashpoint R2 trigger. Have you exchanged your X1T-C for another one to see if the unit you are using is faulty? There may be others with the same issues here: http://flashhavoc.com/godox-x1-c-ttl-triggers-for-canon-announced/comment-page-5/#comment-34912
I have tried 3 different X1T-C units, no go.
Got mine last week and good and bad news.
I tested TTL and manual and they work flawlessly, but the beam assist didn't work.
I was testing something else today and all of a sudden it works.
Then I realized that I bought two of them (X1T-C).
One came with 600D and the other one I bought separately from a local store. The 600D was supposed to arrive from China only in June and the 200D was already here so I didn't want to wait, but surprisingly I received both at the same time.
Now, I don't know anymore which one works and which one has no assist beam.
I didn't have the time to play enough with them.
On the one that works, TTL and manual work at all power, assist beam works at any power and mode. Camera needs to be in one shot and cannot be in AI servo for the assist beam to work.
I like more the 200D, smaller and consistent (with the Fresnel head). I don't like the bulb head - too green and too cold.
TTL seem to off by 2/3rd to 1 full stop on both units, regarding of the background and metering mode. I will put it on exposure comp +2/3rd all time and will see.
I will compare firmware versions when I have a bit more time.
I took the 600D last week-end on an outdoor shoot with a photog friend. Power on the 600D is enough for a 1.2m octabox, double diffused from 2m away at HSS equivalent to F16. The 200D would be only for fill flash, or late/early + overcast day as a key. As a rimlight, it is quite enough (compared to speedlite I used to use, it is a big step up). Recycle time is fantastic on both as a key and rim lights.
Generally, I am happy. I don't know about reliability in time, but I like the zero wire option a lot compared to my Einstein+Yongnuo. It makes me more mobile.
I am on 1DX2, I don't know if things differ with 5D4.