paul_jw
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I bought a pair of YN622C triggers (used, online from B&H). While they seem to work (basically), they don't seem to work properly, and I'm wondering if that is because I'm doing something wrong. My camera is a Canon 80D. At the same time I bought an (also used) Yongnuo YN568EX II flash. The hotshoe of the flash was loose and wobbly, but this was easily corrected by taking off the bottom and tightening some screws.
The flash works perfectly when directly on the camera hotshoe. It is reliable, and it exposes correctly.
If I put one YN622C on the camera and attach my Yongnuo flash to the other one, I observe the following:
- If the flash is on, it flashes as I connect it to the transmitter - it then generally does not fire remotely.
- If I connect the flash to the trigger's hotshoe while the flash is off, and then turn it on, it does work, at least at first.
- Sometimes the flash fires but the image is totally dark - I believe that the flash is not firing at the right time (too early vs. too late). Most of my testing has be done in manual mode with a shutter speed of 1/60. I have high speed sync turned off, and the flash is set to first curtain. (I have experienced the same thing with second curtain and high speed sync on - though it might have worked better with high-speed sync, which shouldn't make sense at 1/60?)
- Sometimes the flash works properly once or twice. Even seeming to work in ETTL, though I have done much of my testing in manual. (Even at 1:1 I have several examples where if fires but the image is totally dark.)
- After one or two successful fires, the flash stops responding to the YN622C - the transmitters seem to be speaking to eachother, but the flash just won't fire. If I restart the flash (generally by opening the battery door and then restarting it), it works, again for a few flashes. This does not appear to be related to recharging, because I can wait several minutes between exposures with no effect, and it recycles rapidly when on the camera hotshoe.
- Even when the flash doesn't fire, the transmitters ARE communicating. If I change the flash settings on the camera, the new settings (zoom, ETTL vs manual, output) are successfully transmitted to the flash. So it doesn't seem to be a communication breakdown.
The behaviour is even stranger if I connect my Canon 580EX II to the transmitter. But the behaviour is TOTALLY different.
- Each time I trigger the flash, it fires twice with a significant delay. The first flash is always dim, and underexposes. I thought this was an ETTL problem, but the same thing happens in manual! Always two flashes, separated by about a second.
- However, the flash ALWAYS fires, so clearly there is no problem with communication between the units.
I have tried every conceivable setting... The problems persist. It would be easy to believe that the YN622Cs are defective in some way, but I can't help but think I'm setting something wrong... I have verified that group and channel are set correctly - both units have CH C1, group A. The transmitters are set to 622 mode.
The test button will reliably fire the flash - both pressing it on the YN622C on the camera and pressing it on the one connected to the flash. However when the flash stops firing it also stops responding to the test button.
The double firing with the Canon speedlight also occurs with the test button!
Any suggestions would be most welcome. I don't think I will be able to return them as they were bought used and I did not have a chance to test them within the first week, so I think I missed my return window.
Thanks,
Paul
The flash works perfectly when directly on the camera hotshoe. It is reliable, and it exposes correctly.
If I put one YN622C on the camera and attach my Yongnuo flash to the other one, I observe the following:
- If the flash is on, it flashes as I connect it to the transmitter - it then generally does not fire remotely.
- If I connect the flash to the trigger's hotshoe while the flash is off, and then turn it on, it does work, at least at first.
- Sometimes the flash fires but the image is totally dark - I believe that the flash is not firing at the right time (too early vs. too late). Most of my testing has be done in manual mode with a shutter speed of 1/60. I have high speed sync turned off, and the flash is set to first curtain. (I have experienced the same thing with second curtain and high speed sync on - though it might have worked better with high-speed sync, which shouldn't make sense at 1/60?)
- Sometimes the flash works properly once or twice. Even seeming to work in ETTL, though I have done much of my testing in manual. (Even at 1:1 I have several examples where if fires but the image is totally dark.)
- After one or two successful fires, the flash stops responding to the YN622C - the transmitters seem to be speaking to eachother, but the flash just won't fire. If I restart the flash (generally by opening the battery door and then restarting it), it works, again for a few flashes. This does not appear to be related to recharging, because I can wait several minutes between exposures with no effect, and it recycles rapidly when on the camera hotshoe.
- Even when the flash doesn't fire, the transmitters ARE communicating. If I change the flash settings on the camera, the new settings (zoom, ETTL vs manual, output) are successfully transmitted to the flash. So it doesn't seem to be a communication breakdown.
The behaviour is even stranger if I connect my Canon 580EX II to the transmitter. But the behaviour is TOTALLY different.
- Each time I trigger the flash, it fires twice with a significant delay. The first flash is always dim, and underexposes. I thought this was an ETTL problem, but the same thing happens in manual! Always two flashes, separated by about a second.
- However, the flash ALWAYS fires, so clearly there is no problem with communication between the units.
I have tried every conceivable setting... The problems persist. It would be easy to believe that the YN622Cs are defective in some way, but I can't help but think I'm setting something wrong... I have verified that group and channel are set correctly - both units have CH C1, group A. The transmitters are set to 622 mode.
The test button will reliably fire the flash - both pressing it on the YN622C on the camera and pressing it on the one connected to the flash. However when the flash stops firing it also stops responding to the test button.
The double firing with the Canon speedlight also occurs with the test button!
Any suggestions would be most welcome. I don't think I will be able to return them as they were bought used and I did not have a chance to test them within the first week, so I think I missed my return window.
Thanks,
Paul