Has anyone experienced and solved this issue?
I have the TT600 paired with the X1T-C transmitter (not that it matters, but both Flashpoint rebranded) and I am getting banding issues when trying to use High Speed Sync.
Both the M5 and the X1T-C have the latest firmware.
I've read threads with Sony users having the same problem but their workaround was to turn off Electronic First Curtain Shutter. I'm almost sure the M5 doesn't have any settings like that.
HSS is exquisitely dependent on the predictability of the flashing light source. Any flicker in the ambient light (and that could be due to almost any ambient light source powered by alternating current) could conceivably cause the effect you observe.
You are using Canon which is a subset of all photography users
You are using an M5 which is a subset of Canon users
You are using a third party flash which is a subset of M5 users
You are using third party triggers which are a subset of third party falsh users
You are using HSS which is another subset of users
You are using this forum which is another subset of users.
Chances are pretty small that someone else would be experiencing this or even have the equipment to try. It was worth a chance, though.
Yes, I did think it was worth a shot given the popularity of Godox strobes and HSS for portraiture lately. I am thinking this issue is not specific to the exact flash I'm using but all Godox strobes and the M5 (possibly the M series).
I've also posted to multiple forums. So far this is the only forum so far where people have at least tried to reply! so I'm crossing my fingers over here 🙂
I guess I had my hopes up too soon.
If anyone cares, I strongly believe it's due to the fact that pretty much most mirrorless uses an electronic front curtain shutter (EFCS) which doesn't play well with Godox HSS. The only difference is some cameras allow you to disable it like Sony bodies, but the M5 is not one of them 😞