Godox Receiver Mis-Syncing Flash

Okay, the setup is a Flashpoint R2 receiver connected to a Canon 5DII as a wireless camera trigger. I've used both a Flashpoint XPro and a Godox X1 transmitter with the same result:

The transmitters fire the flash a moment before they fire the camera. Of course, they're all in the same group and channel (or they wouldn't fire both of them at all).

I've tried this with two different cameras. It's as though the cameras were set to M-sync (which doesn't exist on cameras anymore).

Any clues?

https://photography-on-the.net …/showthread.php​?t=1491276

The camera trigger setup needs to be in a seperate group from the flash setup to overcome shutter lag i.e. the delay you are seeing

Mike

dpe wrote in post #18564902
The camera trigger setup needs to be in a seperate group from the flash setup to overcome shutter lag i.e. the delay you are seeing

Mike

That doesn't work. I put the trigger in group E and turned on group E on the XPro...same results. The flash is still out of sync with the shutter.

Probably not something you want to hear, and I don't even know specifically if this will help but it sounds like it from other Yongnu owners...

The RF-605 units from YongNuo do both flash and shutter triggering, even to the point you can just shoot your main camera and it triggers other cameras and flashes. I believe they do sync up well, and are very inexpensive.

One X1RC unit is $40, but for $33, you get 2 transceivers, and both types of Canon cords. The RF-605 can act like the RF-602 and the RF-603, it has emulation modes. I went this route for a different reason, but I think these units used in conjunction with Godox might get you where you want to be? It would take a bit more research though to verify.

I didn't want to mix systems, but until Godox starts to consolidate their different functions that exist across their different units in one form or another, I am not sure there is a choice.

Dpe or Elv or others may have different ideas on how to get Godox units to do this sync better though with mixed shutter releases and flash triggering.

The X1 transmitter is on channel 2 and fires the R2 on channel 2, the XPro is on channel 1 and the flashes are on channel 1 (apologies I used group when I meant channel on my original reply) and then you can run whatever groups of flashes you want

Mike

dpe wrote in post #18565013
The X1 transmitter is on channel 2 and fires the R2 on channel 2, the XPro is on channel 1 and the flashes are on channel 1 (apologies I used group when I meant channel on my original reply) and then you can run whatever groups of flashes you want

Mike

The setup I want is to hold the XPro in my hand with the R2 receiver attached to the camera's shutter release port. According to the manual, setting both to the same channel and group should work.

If I understand correctly you are trying to fire strobe and camera at the same time with one transmitter?

Transmitter in hand set to channel 1.
R1 set to channel 1 connected to remote port of camera
Flash set to channel 1
correct?

If so it wont work.

Scenario that should work.
Transmitter in hand set to channel 1
R1 set to channel 1 connected to remote port of camera
2nd transmitter on camera hot shoe set to channel 2
flash set to channel 2.

The camera will always have to trigger the flash. There is a delay between pressing the button on the transmitter and the shutter tripping.

If I'm wrong about your intentions try to give a clearer picture and I will try it on my gear at home.

bigVinnie wrote in post #18565113
If I understand correctly you are trying to fire strobe and camera at the same time with one transmitter?

Transmitter in hand set to channel 1.
R1 set to channel 1 connected to remote port of camera
Flash set to channel 1
correct?

If so it wont work.

Scenario that should work.
Transmitter in hand set to channel 1
R1 set to channel 1 connected to remote port of camera
2nd transmitter on camera hot shoe set to channel 2
flash set to channel 2.

The camera will always have to trigger the flash. There is a delay between pressing the button on the transmitter and the shutter tripping.

If I'm wrong about your intentions try to give a clearer picture and I will try it on my gear at home.

That's not what the manual says...

...unless the unwritten presumption is that nobody would try to remotely release the shutter while using flash. But you may be right--I might have been hoping for too much. I'll try your setup later this evening.

And if there is an unavoidable delay in the shutter release, that should also be mentioned. I've got cheapo $20 wireless shutter releases with no delay.

I'm looking at the manual and I'm not seeing it. Page 29 section 3 shows using the receiver as a wireless remote only. Next section just talks about using the PC plug for triggering. I don't see anything about double duty.

Considering the Godox translation issues it is highly possible your manual differs from mine.

RDKirk wrote in post #18565077
The setup I want is to hold the XPro in my hand with the R2 receiver attached to the camera's shutter release port. According to the manual, setting both to the same channel and group should work.

Then the manual is wrong, I explained the reason, shutter lag

Mike

RDKirk wrote in post #18565138
That's not what the manual says...

...unless the unwritten presumption is that nobody would try to remotely release the shutter while using flash. But you may be right--I might have been hoping for too much. I'll try your setup later this evening.

And if there is an unavoidable delay in the shutter release, that should also be mentioned. I've got cheapo $20 wireless shutter releases with no delay.

There is a mechanical delay between when you press the shutter and when the image is taken called shutter lag, every camera has it to a greater or lesser degree. The delay is not caused by the trigger.

Just because you have not used a setup with your cheap triggers that causes you to notice it does not mean it is not happening with them.

Mike

dpe wrote in post #18565163
There is a mechanical delay between when you press the shutter and when the image is taken called shutter lag, every camera has it to a greater or lesser degree. The delay is not caused by the trigger.

Just because you have not used a setup with your cheap triggers that causes you to notice it does not mean it is not happening with them.

Mike

I'll well acquainted with shutter lag.

I presumed you were talking about a lag within the trigger signal, which I would not expect to be significant--and has not been significant in the cheapo wireless triggers.

But in this case, it does appear that the lag introduced by the trigger is palpably significant, and it may be a matter of the circuitry not being able to handle both tasks at the same time.

Hmm. Let me also check to make sure I don't have the trigger set to send flash settings with every shutter release. That probably is too much to handle at once.

Edit: Well, I've had a chance to work with everything more. After all is said and done, there does not appear to be a way to do what I want, which is to both control the flash and release the camera shutter wirelessly from a single device. It looks like I'm still confined to using one device to control the flash and another to release the shutter.

Some PW and Cactus transceivers can do both, but they are different trigger systems.

I've played with the same Godox setup by setting delays on the Godox flash/strobe. For my camera is 0.13-0.14 sec, but the results were not consistent enough for practical use.

RDKirk wrote in post #18565184
But in this case, it does appear that the lag introduced by the trigger is palpably significant, and it may be a matter of the circuitry not being able to handle both tasks at the same time.

Actually each device is handling only 1 function if setup how I said

The trick is to diable all the functions that slow down the release such as anti-red eye and switch to manual focus

Mike