Continuous shooting with flash issue - Yongnuo 560

[cardiff_gareth]

Last time I used continuous shooting with flash for a series of liquid in wine glass omages all worked good, no issues, as I used an off camera TTL sync lead.

Today, I decided to use my Yongnuo 560tx trigger to save having a cable from off camera flash to camera.

My background light was a studio light that was set to its lowest power and set to slave.

So to recap I've got a Yongnuo 560tx on camera triggering wirelessly a Yongnuo 560 off camera and a studio light set to slave that'll fire when the Yongnuo does.

Camera was set to continuous high drive, f16, 1/80th.

Took a single static test shot, all fires off like it should and it looks mint. Pushing the dolly, bashing it into a buffer and watching the liquid go flying in thinking great, hit the shutter.

On review then the opening static is great, the next is massively over exposed and the rest look like the flash haven't fired and are really dark??

All batteries are fresh in the Yongnuo trigger and flash so can't see it being that?

Stumped!!

 

[Scooter]

Some thoughts...

If you had the flash in TTL, and the camera on spot metering, it could have got a completely different reading when you moved the dolly - ramped up the flash and so you got way too much light. It also emptied itself in the process, so the next frames were dark as the flash had not recycled etc.

If the flash was in manual, a similar thing may have happened due to a miscommunication between the 560TX and speedlight (I;ve had this on very rare occasions with the YN622's but never used the 560TX. Usually due to a low battery in the TX, but yours are fresh ones so unlikely tbh))

Owen

Got the full details and full EXIF on the 3 examples? (static, over and dark).

 

[Phil V]

It's an odd one, I can tell you what happened but not why. The 2nd flash was clearly a full power dump, leaving the subsequent shots with no flash at all. But why did the flash dump?

As Owen said, with an ETTL flash, a full power dump is a common fault, but it's less common with a manual flash.

 

[cardiff_gareth]

Thanks both

The images that were no good were binned sorry. All the EXIF would be the same though as the camera was in full manual, flash gun in full manual and the studio light, also in full manual.

I'm wondering if the old studio head was the culprit for the flash dump as it's an old model but being set to its lowest power and using the slave mode I thought it would of been ok.

I also have an idea with the no flash on the others and it's a long shot. The camera drive mode was set to continuous high. I'm wondering if the Yongnuo system just doesn't like that and the camera was firing faster than the Yongnuo liked so it just decided to not play ball and stop all together ??

 

[HoppyUK]

No flash unit can recycle fast enough to keep up with a camera in continuous drive mode, unless it's firing at very low power.

 

[cardiff_gareth]

I used continuous shooting with flash when I shot my series of wine being spilt into a glass series but that was using off camera flash with a wired TTL lead. I was hoping a radio trigger flash could do the same but maybe this new cameras continuous drive is faster than the last cameras?!

 

[Phil V]

I used continuous shooting with flash when I shot my series of wine being spilt into a glass series but that was using off camera flash with a wired TTL lead. I was hoping a radio trigger flash could do the same but maybe this new cameras continuous drive is faster than the last cameras?!

Aah... The joys of changing more than one variable.