Speedlight EL-10 Wireless Sender to 600-EX-RT Issue

[KenKPhoto]

I recently got my EL-10 to work with my R6M2.  Since I have an older 600-EX-RT flash, I tried to synch the two together, with the EL-10 as sender to the 600's receiver.  Both units used the same channel and ID.

They link up, but the problem is that the 600 flashes about 1/2 second after the EL-10.

Any ideas of what to do?

Thanks in advance.

[p4pictures · Accepted solution]

Hi KenKPhoto,

Welcome to the forums. 

Do you have the 600EX-RT configured as a group B, C, D or E unit? 

The unit on the camera that is acting as the sender will be group A automatically. When you press the test button on the sender, the camera will individually trigger each group in sequence but separately. Several times in the past I have found that people think this is a timing issue, but it only occurs when the test button on the sender unit is pressed. When you take a photo the two will fire in sync. 

The reason is so that people can check that each group is actually firing, and was more useful when optical / line of sight triggering was used.

[KenKPhoto]

Thanks- I set both units to A group and it works as you describe.

And now the fun begins!

[p4pictures]

Indeed it does, Speedlite photography is fun indeed. With two light sources under your control you can do quite a lot. Sometimes you may want the 600EX-RT in the same A group as the EL-10, sometimes making them separate is more useful. It is also possible to have the on-camera EL-10 simply act as a radio transmitter and not actually output light itself.