Nasarno

I use Yongnuo YN-560-TX transmitter and YN-560 IV speedlights with my X100S and X-T1 cameras... that's great if you can simply live with manual control of the flashes. Personaly, I prefer manual control over TTL. So, it suites me fine. They are reliable and very easy to use. The first time I had an issue with my X-T1. It didn't fire the external flash, while I had set the flash trigger mode to force fire. First I supposed something is wrong in wireless communication like the channel setting or grouping; but it was firing remotely by test button! Then I supposed it's an issue with the transmitter. So, I inserted one of the flashes onto the camera hot shoe, and it didn't fire either. Strangely, it was reliably triggering the X-T1's small pop-up flash in the same situation. I finally figured out that is due to shutter mode I'd selected; Electrical and Mechanical shutter. It's knid of strange behavior when you choose that option and you use the shutter speedof 180 or 125 which means the Mechanical shutter is being used, but the camera does not trigger the external flash. As soon as I changed the mode to Mechanical shutter only, everything worked fine. I'm still using FW Ver. 3.0, I don't know has it been fixed on newer version or not. I've tested that remote trigger system with X100S up to shutter speed 1000 and it was working flawlessly. beyond that, I saw a little bit of dim lighting which I guess is due to the flash triggering and light emmiting duration, very little at 2000 and more noticably at 4000.