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01-17-2018, 10:39 AM   #1
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Newbie problem with Yongnuo YN585EX

Hi all - I'm new to using flash lighting having done most of my photograpy outdoors but I'm trying to learn the ropes of using speedlights and studio lights and recently bought a YN585EX from Amazon.

I've coupled this with a Neewer digital radio speedlite trigger kit and I'm sure I got it all working straight out of the box, but subsequently I've played around with the settings on the speedlite and now I can't get it to work the way it was, and I'm just going round and circles with the manual.

As I say I'm sure it was working wirelessly using the radio trigger but I spent some time messing around getting it to activate as a slave triggered by the on-camera flash, but I want to go back to using the radio trigger. I've reset the unti by holding down Mode and Sync but it hasn't worked I'm fairly sure that the radio trigger is working as when I press the shutter or the button on top of the transmitted, the light on the base of the receiver flashes so the message is definitely getting across to the receiver.

Can anyone point me in the right direction of what mode I need to be in? (NB for what its worth I'm using it with a K70D and K5D)

Thanks in advance.

01-17-2018, 11:11 AM   #2
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It's most likely to need to be in basic Manual mode for the radio triggers. Make sure any Optical Slave modes are not activated. So turn off any "Wireless" or "Slave modes when using the triggers. Also check that the triggers are on the same channel.

Also make sure you don't go past the max sync speed, 1/180th sec when using the triggers.
01-17-2018, 11:32 AM   #3
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Thanks for the quick reply - I've checked all those things as best I can and I think the problem must be between the radio receiver and the flash unit.

Here's my logic... as I say I'm a newbie to this so I may be wrong...

When the flash unit is set to P-TTL or Manual mode directly on the camera it works fine.
When the flash unit is set as a slave, the red lights on the front of the unit flash to indicate they are waiting, and it fires when the on-camera flash fires.
The wireless system should do nothing other than trigger the flash, so the flash unit shouldn't care if its being triggered remotely or on-camera
The receiver and transmitter are communicating OK because when I fire the flash via the shutter or the button on the transmitter, the red indicator on the receiver lights up. It doesn't do this if you have a mismatch in channels
The shutter speed is faster than 1/180s but even if it weren't I would assume that would just affect the image and not the ability for the flash to fire?

Any other thoughts as to what might be wrong? As I say I'm sure I had it working yesterday.

---------- Post added 01-17-18 at 12:02 PM ----------

OK... I seem to have resolved the issue but I have no idea why its doing what it is doing...

Power on the unit - it comes up in P-TTL mode and everything looks OK but the flash doesn't trigger
Press the mode button and it switches to the first slave mode
Press the right arrow and you get "SE" comes up on the screen and you can't do anything except hit the Power button that takes you back to the main screen
Cycle through all the modes til you get back to the one you started with and select that
Everything works.

Then next time you power it up you have to go through the same cycle to get it to work. Seems like it may be a bug in the firmware of the speedlite
01-17-2018, 12:04 PM   #4
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Glad to help! Please go through the points in my last post and confirm that everything is set as I specified, then check if the triggers work.

01-17-2018, 12:20 PM   #5
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QuoteOriginally posted by mcgregni Quote
Glad to help! Please go through the points in my last post and confirm that everything is set as I specified, then check if the triggers work.
Yes everything was set correctly... manual mode, not slave, same channel and suitable shutter speed. it seems to be a glitch in the software. Its not ideal but at least I can get it working reliably now, even if it means a bit of setup.
01-17-2018, 12:31 PM   #6
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Good, I'm pleased it's sorted. Only use the Slave modes for optical triggering (it's possible they disconnect the hotshoe). Also with your trigger equipment it is not possible to use flash beyond the mac sync speed (1/180th).
01-18-2018, 06:17 PM   #7
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I would agree that the trigger will not fire a flash with the camera shutter set at a faster speed than 1/180. That is the way that my K-3II and K-5IIs function when used with my Cactus V5 triggers and flashes (Pentax and Yongnuo flashes).

Last edited by C_Jones; 01-18-2018 at 06:26 PM.
07-08-2018, 01:31 PM   #8
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Hello all,

I am new on using flash and I bought Yongnuo YN585EX, I put the flash on my K-3 and the setting is PTTL? and it is working, any other setting on the camera after this?

THanks!

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